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Yang J, Fan R, Li Y, He X, Zhao X. Controlled Release of Amphoteric Surfactant from Mesoporous Nanosilica To Enhance Natural Gas Production at High Temperatures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14188-14196. [PMID: 38940399 DOI: 10.1021/acs.langmuir.4c01813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Surfactants are widely used as foaming agents to remove liquid accumulation in gas wells, enhancing natural gas production. The surfactant used in traditional foam sticks was dissolved and released as foam in a short period, especially at elevated downhole temperatures. This often requires the addition of foam sticks to maintain foam. To solve this problem, this study studies the utilization of nano silica to incorporate the amphoteric surfactant, cocamidopropyl betaine (CAB), into the mesoporous structure of silica nanocomposite as foam sticks for controlled release of CAB. Mesoporous nano silica was prepared by a sol-gel acid-catalyzed process with a silica precursor. The formation of nanocomposite solid sticks containing the amphoteric surfactant was achieved by aging and drying. The composite was characterized by various techniques: infrared spectroscopy, thermogravimetric analysis, energy-dispersive spectrometry, scanning electron microscopy, transmission electron microscopy, and small-angle X-ray diffraction. Results showed that 49.3% of CAB was encapsulated within the mesoporous structure of 30-50 nm nano silica. CAB release over time in aqueous solution at 130 °C exhibited 10.1% surfactant left in the nanocomposite after 72 h, as determined by thermal analysis. Surfactant release was systematically evaluated through foam performance tests. The study revealed that CAB could be control-released over 168 h via CAB diffusion from mesoporous silica. This study provides a longer-lasting foam method to enhance gas production by utilizing mesoporous silica as a control release medium for gas well deliquification.
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Affiliation(s)
- Jiang Yang
- College of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113000, China
- Sanya Offshore Oil and Gas Research Institute, Northeast Petroleum University, Sanya, Hainan 572025, China
| | - Rongrong Fan
- College of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113000, China
| | - Yingcheng Li
- Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China
| | - Xiujuan He
- Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China
| | - Xiaolong Zhao
- College of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113000, China
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2
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Zhan H, Liu J, Wang P, Wang C, Wang Z, Chen M, Zhu X, Fu B. Integration of N- and P- elements in sodium alginate aerogels for efficient flame retardant and thermal insulating properties. Int J Biol Macromol 2024; 273:132643. [PMID: 38823751 DOI: 10.1016/j.ijbiomac.2024.132643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/10/2024] [Accepted: 05/23/2024] [Indexed: 06/03/2024]
Abstract
In the field of building energy conservation, the development of biodegradable biomass aerogels with excellent mechanical performance, flame retardancy and thermal insulation properties is of particular importance. Here, a directional freeze-drying method was used for fabricating composite sodium alginate (SA) aerogels containing functionalized ammonium polyphosphate (APP) flame retardant. In particular, APP was coated with melamine (MEL) and phytic acid (PA) by a supramolecular assembly process. Through optimizing the flame retardant addition, the SA-20 AMP sample exhibited excellent flame retardant and thermal insulation properties, with the limiting oxygen index of 38.2 % and the UL-94 rating of V-0. Such aerogels with anisotropic morphology demonstrated a low thermal conductivity of 0.0288 (W/m·K) in the radial direction (perpendicular to the lamellar structure). In addition, as-obtained aerogels displayed remarkable water stability and mechanical properties, indicating significant potential for practical applications.
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Affiliation(s)
- Huanhui Zhan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Ju Liu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Ping Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Chenfei Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhongguo Wang
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Muhua Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xinbao Zhu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Bo Fu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
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Huang W, Zhang X, Yu Z, Sun C, Shan T, Zhang Z. Non-crosslinked systems modulate the gel behavior and structural properties of chitosan/silica composite aerogels. Int J Biol Macromol 2024; 264:130630. [PMID: 38458277 DOI: 10.1016/j.ijbiomac.2024.130630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/22/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
The aim of this study was to achieve rapid gelation of chitosan (CS) and silica (SA) without crosslinking agent, the relationship between process parameters and the composite aerogels properties were also explored. By varying the composition ratio of the system (from SA:CS = 1:1 to 5:1), the system gelation time was reduced by >12 times, and the drying shrinkage of the composite aerogel reached a minimum of 7.6 %. During the two recombination processes, chitosan rapidly formed aqueous colloid secondary structure under the influence of ethanol. This phenomenon reduced the stability of the system and allowed silica to form a two-phase composite hydrogel. Because the network gap between the fibers was used as a limiting medium for gel growth. In addition, the chitosan/silica composite aerogels exhibited a mesoporous structure with low density (0.1144 g/cm3), and the thermal conductivity was 0.028 W/(m·K) at 30 °C. The trimethylchlorosilane made the composite aerogel have good hydrophobicity with water contact angle as 134.7°, and the adsorption capacity of carbon tetrachloride could reach >10 times of its own weight. This study provides an eco-friendly and high-efficiency method for preparing aerogels, which has potential applications in the fields of thermal insulation, oil-water separation, etc.
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Affiliation(s)
- Wenzhang Huang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xin Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhen Yu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Chenxi Sun
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Tikun Shan
- College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China.
| | - Zhenxiu Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, China.
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Niculescu AG, Tudorache DI, Bocioagă M, Mihaiescu DE, Hadibarata T, Grumezescu AM. An Updated Overview of Silica Aerogel-Based Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:469. [PMID: 38470798 DOI: 10.3390/nano14050469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 02/29/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024]
Abstract
Silica aerogels have gained much interest due to their unique properties, such as being the lightest solid material, having small pore sizes, high porosity, and ultralow thermal conductivity. Also, the advancements in synthesis methods have enabled the creation of silica aerogel-based composites in combination with different materials, for example, polymers, metals, and carbon-based structures. These new silica-based materials combine the properties of silica with the other materials to create a new and reinforced architecture with significantly valuable uses in different fields. Therefore, the importance of silica aerogels has been emphasized by presenting their properties, synthesis process, composites, and numerous applications, offering an updated background for further research in this interdisciplinary domain.
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Affiliation(s)
- Adelina-Gabriela Niculescu
- Research Institute of the University of Bucharest-ICUB, University of Bucharest, 050657 Bucharest, Romania
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
| | - Dana-Ionela Tudorache
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
| | - Maria Bocioagă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
| | - Dan Eduard Mihaiescu
- Department of Organic Chemistry, Politehnica University of Bucharest, 011061 Bucharest, Romania
| | - Tony Hadibarata
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
- Environmental Engineering Program, Faculty of Engineering and Science, Curtin University, Miri 98000, Malaysia
| | - Alexandru Mihai Grumezescu
- Research Institute of the University of Bucharest-ICUB, University of Bucharest, 050657 Bucharest, Romania
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
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Li JY, Tian BH, Li XX, Wang Z, Cui LP, Liang DD, Wang SL, Liu YH, Ou HA, Liang HX. Energy effective utilization of circulating fluidized bed fly ash to prepare silicon-aluminum composite aerogel and gypsum. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 172:162-170. [PMID: 37918309 DOI: 10.1016/j.wasman.2023.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/16/2023] [Accepted: 10/20/2023] [Indexed: 11/04/2023]
Abstract
To reduce the cost of Si-Al aerogels preparation, circulating fluidized bed fly ash (CFA) was developed to be as the alternative to synthetic precursors. High energy consumption of alkali-melting and secondary wastes production were the major challenges. Here, a technique characterized by effective energy consumption and non-secondary waste was developed to convert CFA into Si-Al aerogel. The process consists two stages, preparation of Si-Al sol by sintering of CFA and Na2CO3 followed by sulfuric acid leaching, and synthesis of Si-Al aerogel by so-gel with trimethyl chlorosilane modification and ambient pressure drying. The optimization results of proportion and sintering temperature showed that the optimal temperature of sintering of Na2CO3 and CFA with the mass ratio of 0.7 was 750 °C, 100 °C lower than that of most other waste aluminosilicate materials. CaSO4·0.5H2O which meet building gypsum requirement was obtained by specifying the drying temperature of acid-leached residue at 126 °C for 2 h. The modification procedure was explored to obtain Si-Al aerogel with a large specific surface area of 857 m2/g and hydrophobic angle of 139.3°. Thermal and mechanical properties tests indicated that the Si-Al aerogels and gypsum produced from CFA exhibited promising thermal insulation and the potential application in construction.
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Affiliation(s)
- Jia-Yong Li
- College of Biomedical Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China; College of Environmental Science and Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China
| | - Bao-Hua Tian
- College of Ecology, Taiyuan University of Technology, 79 West Street Yingze, Taiyuan, Shanxi 030024, China
| | - Xin-Xin Li
- College of Ecology, Taiyuan University of Technology, 79 West Street Yingze, Taiyuan, Shanxi 030024, China
| | - Zhe Wang
- College of Safety and Emergency Management Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China
| | - Li-Ping Cui
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China
| | - Dan-Dan Liang
- College of Biomedical Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China; College of Environmental Science and Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China
| | - Shuang-Lin Wang
- College of Biomedical Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China; College of Environmental Science and Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China
| | - Yu-He Liu
- College of Biomedical Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China; College of Environmental Science and Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China
| | - Heng-An Ou
- College of Materials Science and Engineering, Taiyuan University of Technology, 79 West Street Yingze, Taiyuan, Shanxi 030024, China
| | - Hai-Xia Liang
- College of Biomedical Engineering, Taiyuan University of Technology, 209 University Street, Jinzhong, Shanxi 030600, China; College of Ecology, Taiyuan University of Technology, 79 West Street Yingze, Taiyuan, Shanxi 030024, China.
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Li Q, Zhong Z, Du H, Yang Y, Zheng X, Zhang B, Jin B. Influence of silica-aluminum materials on heavy metals release during paper sludge pyrolysis: Experimental and theoretical studies. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 170:177-192. [PMID: 37595503 DOI: 10.1016/j.wasman.2023.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 06/06/2023] [Accepted: 08/12/2023] [Indexed: 08/20/2023]
Abstract
It is of great significance to reduce the secondary risk of heavy metals during the pyrolysis of paper sludge. This study used kaolin and alumina-silica-based xerogels to control heavy metals released during sludge pyrolysis. Pyrolyzing a mixture of sludge and 7% kaolin at 400 °C achieved high retention rates for Cu (95.85%), Zn (95.97%), Pb (97.15%), Cd (84.23%), and Cr (84.05%) when the pyrolysis tail gas was treated with 9 g of xerogel. The addition of kaolin facilitated the transformation of Cu, Zn, Pb, and Cr from the unstable fraction to the stable fraction in pyrolysis biochar, reducing their leachability. The xerogels also played a crucial role in adsorbing and stabilizing the heavy metals. The results of thermodynamic equilibrium calculations showed that Pb(g), PbS(g), PbCl2(g), PbCl(g), Zn(g), ZnCl2(g), and Cd(g) were the main gaseous products of Zn, Pb, and Cd during paper sludge pyrolysis. The Pb atoms in PbCl2 and PbS, and the Zn atoms in ZnCl2 bond with the oxygen atoms on the kaolin surface by covalent bonds, while the Cl atoms in PbCl and the Pb atoms of elemental lead form ionic bonds with H and O atoms on the kaolinite surface, respectively. These experimental and simulation results offer new ideas for controlling heavy metals during sludge pyrolysis.
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Affiliation(s)
- Qian Li
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
| | - Zhaoping Zhong
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China.
| | - Haoran Du
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
| | - Yuxuan Yang
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
| | - Xiang Zheng
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
| | - Bo Zhang
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
| | - Baosheng Jin
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
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Jin R, Zhou Z, Liu J, Shi B, Zhou N, Wang X, Jia X, Guo D, Xu B. Aerogels for Thermal Protection and Their Application in Aerospace. Gels 2023; 9:606. [PMID: 37623061 PMCID: PMC10453839 DOI: 10.3390/gels9080606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/17/2023] [Accepted: 07/21/2023] [Indexed: 08/26/2023] Open
Abstract
With the continuous development of the world's aerospace industry, countries have put forward higher requirements for thermal protection materials for aerospace vehicles. As a nano porous material with ultra-low thermal conductivity, aerogel has attracted more and more attention in the thermal insulation application of aerospace vehicles. At present, the summary of aerogel used in aerospace thermal protection applications is not comprehensive. Therefore, this paper summarizes the research status of various types of aerogels for thermal protection (oxide aerogels, organic aerogels, etc.), summarizes the hot issues in the current research of various types of aerogels for thermal protection, and puts forward suggestions for the future development of various aerogels. For oxide aerogels, it is necessary to further increase their use temperature and inhibit the sintering of high-temperature resistant components. For organic aerogels, it is necessary to focus on improving the anti-ablation, thermal insulation, and mechanical properties in long-term aerobic high-temperature environments, and on this basis, find cheap raw materials to reduce costs. For carbon aerogels, it is necessary to further explore the balanced relationship between oxidation resistance, mechanics, and thermal insulation properties of materials. The purpose of this paper is to provide a reference for the further development of more efficient and reliable aerogel materials for aerospace applications in the future.
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Affiliation(s)
- Runze Jin
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China; (R.J.); (Z.Z.); (B.S.); (N.Z.); (X.W.); (X.J.); (D.G.)
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Zihan Zhou
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China; (R.J.); (Z.Z.); (B.S.); (N.Z.); (X.W.); (X.J.); (D.G.)
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Jia Liu
- Beijing Spacecrafts, China Academy of Space Technology, Beijing 100191, China
| | - Baolu Shi
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China; (R.J.); (Z.Z.); (B.S.); (N.Z.); (X.W.); (X.J.); (D.G.)
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Ning Zhou
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China; (R.J.); (Z.Z.); (B.S.); (N.Z.); (X.W.); (X.J.); (D.G.)
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Xinqiao Wang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China; (R.J.); (Z.Z.); (B.S.); (N.Z.); (X.W.); (X.J.); (D.G.)
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Xinlei Jia
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China; (R.J.); (Z.Z.); (B.S.); (N.Z.); (X.W.); (X.J.); (D.G.)
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Donghui Guo
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China; (R.J.); (Z.Z.); (B.S.); (N.Z.); (X.W.); (X.J.); (D.G.)
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Baosheng Xu
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China; (R.J.); (Z.Z.); (B.S.); (N.Z.); (X.W.); (X.J.); (D.G.)
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
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Ghica ME, Mandinga JGS, Linhares T, Almeida CMR, Durães L. Improvement of the Mechanical Properties of Silica Aerogels for Thermal Insulation Applications through a Combination of Aramid Nanofibres and Microfibres. Gels 2023; 9:535. [PMID: 37504414 PMCID: PMC10378766 DOI: 10.3390/gels9070535] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/12/2023] [Accepted: 06/28/2023] [Indexed: 07/29/2023] Open
Abstract
Reinforcement of silica aerogels, remarkable lightweight mesoporous materials with outstanding insulation performance, is still a challenging research topic. Among the strategies used to overcome their brittleness, one of the most effective is the manufacturing of aerogel composites with embedded fibres. In this work, the incorporation of nanofibres together with microfibres in a tetraethoxysilane-vinyltrimethoxysilane matrix is investigated for the first time for the development of novel aerogel nanocomposites. The nanofibres, synthesized from different aramid fibres, including Kevlar® pulp, Technora®, Teijinconex® and Twaron® fibres, were used in different combinations with microaramids and the resulting nanocomposites were thoroughly investigated for their physicochemical and thermomechanical features. The properties depended on the type and amount of the nano/microfibre used. While the microfibres exhibited low interaction with the silica matrix, the higher surface of the nanofibres ensured increased contact with the gel matrix. A low bulk density of 161 kg m-3 and thermal conductivity of 38.3 mW m-1 K-1 (Hot Disk®) was achieved when combining the nanofibres obtained from Kevlar® pulp with the Technora® or Teijinconex® long fibres. The nanofibres showed higher dispersion and random orientation and in combination with microfibres led to the improvement by a factor of three regarding the mechanical properties of the aerogel nanocomposites reinforced only with microfibres. The scale-up process of the samples and simulated tests of thermal cycling and vacuum outgassing successfully conducted indicate good compliance with space applications.
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Affiliation(s)
- Mariana Emilia Ghica
- University of Coimbra, CIEPQPF, Department of Chemical Engineering, 3030-790 Coimbra, Portugal
| | - Jandira G S Mandinga
- University of Coimbra, CIEPQPF, Department of Chemical Engineering, 3030-790 Coimbra, Portugal
| | - Teresa Linhares
- University of Coimbra, CIEPQPF, Department of Chemical Engineering, 3030-790 Coimbra, Portugal
| | - Cláudio M R Almeida
- University of Coimbra, CIEPQPF, Department of Chemical Engineering, 3030-790 Coimbra, Portugal
| | - Luisa Durães
- University of Coimbra, CIEPQPF, Department of Chemical Engineering, 3030-790 Coimbra, Portugal
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Meti P, Wang Q, Mahadik DB, Lee KY, Gong YD, Park HH. Evolutionary Progress of Silica Aerogels and Their Classification Based on Composition: An Overview. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13091498. [PMID: 37177045 PMCID: PMC10180228 DOI: 10.3390/nano13091498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 04/18/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023]
Abstract
Aerogels are highly porous materials with fascinating properties prepared using sol-gel chemistry. Due to their unique physical and chemical properties, aerogels are recognized as potential candidates for diverse applications, including thermal insulation, sensor, environmental remediation, etc. Despite these applications, aerogels are not routinely found in our daily life because they are fragile and have highly limited scale-up productions. It remains extremely challenging to improve the mechanical properties of aerogels without adversely affecting their other properties. To boost the practical applications, it is necessary to develop efficient, low-cost methods to produce aerogels in a sustainable way. This comprehensive review surveys the progress in the development of aerogels and their classification based on the chemical composition of the network. Recent achievements in organic, inorganic, and hybrid materials and their outstanding physical properties are discussed. The major focus of this review lies in approaches that allow tailoring of aerogel properties to meet application-driven requirements. We begin with a brief discussion of the fundamental issues in silica aerogels and then proceed to provide an overview of the synthesis of organic and hybrid aerogels from various precursors. Organic aerogels show promising results with excellent mechanical strength, but there are still several issues that need further exploration. Finally, growing points and perspectives of the aerogel field are summarized.
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Affiliation(s)
- Puttavva Meti
- Innovative Drug Library Research Center, Department of Chemistry, Dongguk University, Seoul 04620, Republic of Korea
| | - Qi Wang
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - D B Mahadik
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Kyu-Yeon Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Young-Dae Gong
- Innovative Drug Library Research Center, Department of Chemistry, Dongguk University, Seoul 04620, Republic of Korea
| | - Hyung-Ho Park
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
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10
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Tian Y, Wang X, Wu Y, Zhang X, Li C, Wang Y, Shen J. A Facile Method to Fabricate Al 2O 3-SiO 2 Aerogels with Low Shrinkage up to 1200 °C. Molecules 2023; 28:molecules28062743. [PMID: 36985715 PMCID: PMC10055902 DOI: 10.3390/molecules28062743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023] Open
Abstract
Monolithic Al2O3-SiO2 composite aerogels were synthesized by using inexpensive aluminum chloride hexahydrate (AlCl3·6H2O) and tetraethyl orthosilicate (TEOS). By adjusting the molar ratio of Al and Si, the best ratio of high-temperature resistance was found. The resultant aerogels (Al:Si = 9:1) exhibit high thermal performance, which can be identified by the low linear shrinkage of 5% and high specific surface area (SSA) of 283 m2/g at 1200 °C. Alumina in these aerogels mainly exists in the boehmite phase and gradually transforms into the θ-Al2O3 phase in the process of heating to 1200 °C. No α-Al2O3 is detected in the heating process. These Al2O3-SiO2 composite aerogels are derived from a simple, low-priced and safe method. With their high thermal performance, these aerogels will have a wide application in high-temperature field.
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Affiliation(s)
- Yulin Tian
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xiaodong Wang
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - Yu Wu
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xiaoxue Zhang
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - Chun Li
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - Yijun Wang
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - Jun Shen
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
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11
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Liu L, Wang X, Zhang Z, Shi Y, Zhao Y, Shen S, Yao X, Shen J. A Facile Method for Fabricating a Monolithic Mullite Fiber-Reinforced Alumina Aerogel with Excellent Mechanical and Thermal Properties. Gels 2022; 8:gels8060380. [PMID: 35735723 PMCID: PMC9223136 DOI: 10.3390/gels8060380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 11/16/2022] Open
Abstract
Alumina aerogels are considered to have good application prospects in the high-temperature field. In this study, monolithic mullite fiber-reinforced alumina aerogels with excellent mechanical and thermal properties were synthesized via a facile method without the use of any chelating agents. This method successfully avoids the introduction of impurities during the use of catalysts and chelating agents while greatly reducing gelation time, and thus helps mullite fibers to uniformly disperse in the sol. The compressive stress at 80% strain of the obtained mullite fiber-reinforced alumina aerogels was as high as 16.04 MPa—426% higher than that of the alumina aerogel without the addition of mullite fibers. Regarding thermal properties, the shrinkage of the mullite fiber-reinforced alumina aerogels (AM) samples was less than 1% after heat treatment at 1300 °C for 2 h. Furthermore, the rear-surface temperature of the AM samples burned by a butane blow torch was only 68 °C. These outstanding properties make AM samples promising for application in thermal insulation materials in high-temperature fields such as aerospace and industrial thermal protection in the future.
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Affiliation(s)
- Lin Liu
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China; (L.L.); (Z.Z.)
| | - Xiaodong Wang
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China; (L.L.); (Z.Z.)
- Correspondence: (X.W.); (J.S.)
| | - Ze Zhang
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China; (L.L.); (Z.Z.)
| | - Yixin Shi
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China; (Y.S.); (Y.Z.); (S.S.); (X.Y.)
| | - Yicheng Zhao
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China; (Y.S.); (Y.Z.); (S.S.); (X.Y.)
| | - Shiqi Shen
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China; (Y.S.); (Y.Z.); (S.S.); (X.Y.)
| | - Xiandong Yao
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China; (Y.S.); (Y.Z.); (S.S.); (X.Y.)
| | - Jun Shen
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China; (L.L.); (Z.Z.)
- Correspondence: (X.W.); (J.S.)
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12
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Wang L, Feng J, Luo Y, Jiang Y, Zhang G, Feng J. Versatile Thermal-Solidifying Direct-Write Assembly towards Heat-Resistant 3D-Printed Ceramic Aerogels for Thermal Insulation. SMALL METHODS 2022; 6:e2200045. [PMID: 35344287 DOI: 10.1002/smtd.202200045] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Ceramic aerogels have great potential in the areas of thermal insulation, catalysis, filtration, environmental remediation, energy storage, etc. However, the conventional shaping and post-processing of ceramic aerogels are plagued by their brittleness due to the inefficient neck connection of oxide ceramic nanoparticles. Here a versatile thermal-solidifying direct-ink-writing has been proposed for fabricating heat-resistant ceramic aerogels. The versatility lies in the good compatibility and designability of ceramic inks, which makes it possible to print silica aerogels, alumina-silica aerogels, and titania-silica aerogels. 3D-printed ceramic aerogels show excellent high-temperature stability up to 1000 °C in air (linear shrinkage less than 5%) when compared to conventional silica aerogels. This improved heat resistance is attributed to the existence of a refractory fumed silica phase, which restrains the microstructure destruction of ceramic aerogels in high-temperature environments. Benefiting from low density (0.21 g cm-3 ), high surface area (284 m2 g-1 ), and well-distributed mesopores, 3D-printed ceramic aerogels possess a low thermal conductivity (30.87 mW m-1 K-1 ) and are considered as ideal thermal insulators. The combination of ceramic aerogels with 3D printing technology would open up new opportunities to tailor the geometry of porous materials for specific applications.
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Affiliation(s)
- Lukai Wang
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, P. R. China
| | - Junzong Feng
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, P. R. China
| | - Yi Luo
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, P. R. China
| | - Yonggang Jiang
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, P. R. China
| | - Guojie Zhang
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, P. R. China
| | - Jian Feng
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, P. R. China
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13
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Gu J, Ji C, Fu R, Yang X, Wan Z, Wen L, Song Q, Liu Y, Wang Y, Sai H. Robust SiO2–Al2O3/Agarose Composite Aerogel Beads with Outstanding Thermal Insulation Based on Coal Gangue. Gels 2022; 8:gels8030165. [PMID: 35323278 PMCID: PMC8952686 DOI: 10.3390/gels8030165] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/27/2022] [Accepted: 03/04/2022] [Indexed: 01/25/2023] Open
Abstract
Advanced SiO2–Al2O3 aerogel materials have outstanding potential in the field of thermal insulation. Nevertheless, the creation of a mechanically robust and low-cost SiO2–Al2O3 aerogel material remains a considerable challenge. In this study, SiO2–Al2O3 aerogel based on coal gangue, which is a type of zero-cost inorganic waste, was constructed in porous agarose aerogel beads, followed by simple chemical vapor deposition of trimethylchlorosilane to fabricate SiO2–Al2O3/agarose composite aerogel beads (SCABs). The resulting SCABs exhibited a unique nanoscale interpenetrating network structure, which is lightweight and has high specific surface area (538.3 m2/g), hydrophobicity (approximately 128°), and excellent thermal stability and thermal insulation performance. Moreover, the compressive strength of the SCABs was dramatically increased by approximately a factor of ten compared to that of native SiO2–Al2O3 aerogel beads. The prepared SCABs not only pave the way for the design of a novel aerogel material for use in thermal insulation without requiring expensive raw materials, but also provide an effective way to comprehensively use coal gangue.
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Affiliation(s)
- Jie Gu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Chao Ji
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Rui Fu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Correspondence: (R.F.); (H.S.)
| | - Xin Yang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Zhichen Wan
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Lishuo Wen
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Qiqi Song
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yinghui Liu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yaxiong Wang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Huazheng Sai
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Correspondence: (R.F.); (H.S.)
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14
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Sun M, Li C, Feng J, Sun H, Sun M, Feng Y, Ji X, Han S, Feng J. Development of aerogels in solid-phase extraction and microextraction. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2021.116497] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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15
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Cao J, Mao L, Gao B. Sensitization Mechanism of Alumina Aerogels: Introducing Gd
3+
as a Sensitizing Ion to Enhance the Luminescence Intensity of Tb
3+. ChemistrySelect 2021. [DOI: 10.1002/slct.202103216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jinyao Cao
- School of Environmental & Safety Engineering Changzhou University 21-Gehu Road, Wujin District Changzhou Jiangsu China
| | - Linqiang Mao
- School of Environmental & Safety Engineering Changzhou University 21-Gehu Road, Wujin District Changzhou Jiangsu China
| | - Bingying Gao
- School of Petrochemical Engineering Changzhou University 21-Gehu Road, Wujin District Changzhou Jiangsu China
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16
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Walker RC, Potochniak AE, Hyer AP, Ferri JK. Zirconia aerogels for thermal management: Review of synthesis, processing, and properties information architecture. Adv Colloid Interface Sci 2021; 295:102464. [PMID: 34364134 DOI: 10.1016/j.cis.2021.102464] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 01/24/2023]
Abstract
Zirconia aerogels are porous nanomaterials with high specific surface areas and low thermal conductivities that are suitable for a wide range of functions. The applications of zirconia aerogels include numerous uses in thermal management systems that are specifically beneficial in aeronautics and aerospace systems. This review seeks to detail the synthesis, processing, and characterization of these unique materials. However, the many distinctive synthesis pathways and processing conditions of zirconia aerogels can make the optimization of these materials difficult, potentially inhibiting further development. Independent variables in the synthesis process alone include zirconium precursor, rare earth stabilizer, solvent system, gelation agent, and surfactant templating agent. If only two distinct options were available for each synthetic variable, there would be up to 32 different synthetic pathways; if there were three options for each variable, 243 different synthetic pathways would be possible. Apart from the gel synthesis, processing conditions, including drying method, drying temperature, drying solvent, and sintering temperature, as well as various techniques used to characterize aerogels, need to be considered. To mitigate the sheer volume of synthetic parameters, this review uses an architected information structure to contemplate approximately 600 aerogel materials, along with the synthesis and processing conditions that make each material unique. By utilizing this information structure, containing over 10,000 relationships amongst 3,800 nodes, the connection between specific properties of zirconia aerogels and the pathways used to produce them can be more easily visualized, leading to a more effective understanding of the many variables that are used in the synthesis and processing of these materials. This review seeks to utilize data science in a way that can elucidate structure-property relationships in colloidal chemistry, providing a more efficient way to evaluate the synthesis and processing of materials with high experimental dimensionality.
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Affiliation(s)
- Rebecca C Walker
- Department of Chemical & Life Science Engineering, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Anna E Potochniak
- Department of Chemical & Life Science Engineering, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Andres P Hyer
- Department of Chemical & Life Science Engineering, Virginia Commonwealth University, Richmond, VA, United States of America
| | - James K Ferri
- Department of Chemical & Life Science Engineering, Virginia Commonwealth University, Richmond, VA, United States of America.
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17
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Zhang E, Zhang W, Lv T, Li J, Dai J, Zhang F, Zhao Y, Yang J, Li W, Zhang H. Insulating and Robust Ceramic Nanorod Aerogels with High-Temperature Resistance over 1400 °C. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20548-20558. [PMID: 33877815 DOI: 10.1021/acsami.1c02501] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Ceramic aerogels, which present a unique combination of low thermal conductivity and excellent high-temperature stability, are attractive for thermal insulation under extreme conditions. However, most ceramic aerogels are constructed by oxide ceramic nanoparticles and thus are usually plagued by their brittleness and structural collapse at elevated temperatures (less than 1000 °C). Despite great progress achieved in this regard recently, it still remains a big challenge to design and fabricate intriguing ceramic aerogels with enhanced mechanical strength and remarkable thermal stability at ultrahigh temperature up to 1400 °C. To this end, we herein report a facile and scalable strategy to manufacture ceramic nanorod aerogels (CNRAs) with hierarchically macroporous and mesoporous structures by the controllable assembly of Al2O3 nanorods and SiO2 nanoparticles. Subsequently, the high-temperature annealing treatment of CNRAs significantly maximizes mechanical strength and promotes thermal tolerance. The obtained CNRAs demonstrate the integrated properties of super-strong heat resistance (up to 1400 °C), low thermal conductivity (0.026 W/m·K at 25 °C and 0.089 W/m·K at 1200 °C), high mechanical robustness (compressive strength 1.5 MPa), and low density (0.146 g/cm3). We envision that this novel nanorod-assembled ceramic aerogels offer considerable advantages than most of the state-of-the-art ceramic aerogels for thermal superinsulation upon exposure to extremely harsh environments.
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Affiliation(s)
- Enshuang Zhang
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Wanlin Zhang
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Tong Lv
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Jian Li
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Jingxin Dai
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Fan Zhang
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Yingmin Zhao
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Jinying Yang
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Wenjing Li
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
| | - Hao Zhang
- Aerospace Institute of Advanced Material & Processing Technology, Beijing 100074, P. R. China
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18
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Li H, Liu Y, Liu Y, Zeng Q, Liang J. Silica strengthened alumina ceramic cores prepared by 3D printing. Ann Ital Chir 2021. [DOI: 10.1016/j.jeurceramsoc.2020.11.050] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Khrizanforova VV, Shekurov RP, Nizameev IR, Gerasimova TP, Khrizanforov MN, Bezkishko IA, Miluykov VA, Budnikova YH. Aerogel based on nanoporous aluminium ferrocenyl diphosphinate metal-organic framework. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Shah N, Rehan T, Li X, Tetik H, Yang G, Zhao K, Lin D. Magnetic aerogel: an advanced material of high importance. RSC Adv 2021; 11:7187-7204. [PMID: 35423256 PMCID: PMC8695117 DOI: 10.1039/d0ra10275j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 01/12/2021] [Indexed: 12/27/2022] Open
Abstract
Magnetic materials have brought innovations in the field of advanced materials. Their incorporation in aerogels has certainly broadened their application area. Magnetic aerogels can be used for various purposes from adsorbents to developing electromagnetic interference shielding and microwave absorbing materials, high-level diagnostic tools, therapeutic systems, and so on. Considering the final use and cost, these can be fabricated from a variety of materials using different approaches. To date, several studies have been published reporting the fabrication and uses of magnetic aerogels. However, to our knowledge, there is no review that specifically focuses only on magnetic aerogels, so we attempted to overview the main developments in this field and ended our study with the conclusion that magnetic aerogels are one of the emerging and futuristic advanced materials with the potential to offer multiple applications of high value.
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Affiliation(s)
- Nasrullah Shah
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University Manhattan KS 66506 USA +1-765-2372200 +1-785-4911492
- Department of Chemistry, Abdul Wali Khan University Mardan Mardan KP 23200 Pakistan
| | - Touseef Rehan
- Department of Biochemistry, Quaid-i-Azam University Islamabad 24000 Pakistan
| | - Xuemue Li
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University Manhattan KS 66506 USA +1-765-2372200 +1-785-4911492
- Key Laboratory of High Efficiency and Clean Mechanical Engineering, Shandong University Jinan 250061 China
| | - Halil Tetik
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University Manhattan KS 66506 USA +1-765-2372200 +1-785-4911492
| | - Guang Yang
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University Manhattan KS 66506 USA +1-765-2372200 +1-785-4911492
| | - Keren Zhao
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University Manhattan KS 66506 USA +1-765-2372200 +1-785-4911492
| | - Dong Lin
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University Manhattan KS 66506 USA +1-765-2372200 +1-785-4911492
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21
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Investigation of Aerogel Production Processes: Solvent Exchange under High Pressure Combined with Supercritical Drying in One Apparatus. Gels 2021; 7:gels7010004. [PMID: 33466392 PMCID: PMC7838798 DOI: 10.3390/gels7010004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 12/29/2022] Open
Abstract
This work aims to contribute to the theoretical and experimental research of supercritical processes for intensification and combination in one apparatus. Investigation is carried out to improve production technology of organic alginate aerogels. It is proposed within the investigation to carry out the solvent exchange stage, an important stage of organic aerogels production, under pressure in a carbon dioxide medium in the same apparatus used for supercritical drying. The phase behavior in the system "carbon dioxide-water-2-propanol", which arises during such a solvent exchange stage, is studied theoretically. An experimental study of the process of step-by-step solvent exchange under pressure was carried out through multiphase and homogeneous regions of the phase diagram of such a system. As a result, new highly efficient technology for the production of organic aerogels was proposed, which can be implemented by combining the two main stages of the process.
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