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Yang X, Liu Z, Liu J, Zheng J, Li X, Li S, Ye Y, Xie W, Zhang J, Lan H, Wang D, Zheng Z. Two-step strategy for the comprehensive utilization of tobacco stem. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02491-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Recent Progress of Ga-Based Catalysts for Catalytic Conversion of Light Alkanes. Catalysts 2022. [DOI: 10.3390/catal12111371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The efficient and clean conversion of light alkanes is a research hotspot in the petrochemical industry, and the development of effective and eco-friendly non-noble metal-based catalysts is a key factor in this field. Among them, gallium is a metal component with good catalytic performance, which has been extensively used for light alkanes conversion. Herein, we critically summarize recent developments in the preparation of gallium-based catalysts and their applications in the catalytic conversion of light alkanes. First, we briefly describe the different routes of light alkane conversion. Following that, the remarkable preparation methods for gallium-based catalysts are discussed, with their state-of-the-art application in light alkane conversion. It should be noticed that the directional preparation of specific Ga species, strengthening metal-support interactions to anchor Ga species, and the application of new kinds of methods for Ga-based catalysts preparation are at the leading edge. Finally, the review provides some current limitations and future perspectives for the development of gallium-based catalysts. Recently, different kinds of Ga species were reported to be active in alkane conversion, and how to separate them with advanced in situ and ex situ characterizations is still a problem that needs to be solved. We believe that this review can provide base information for the preparation and application of Ga-based catalysts in the current stage. With these summarizations, this review can inspire new research directions of gallium-based catalysts in the catalysis conversion of light alkanes with ameliorated performances.
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Li G, Qi X, Yang N, Duan X, Zhang A. Novel iron-supported ZSM-5 molecular sieve remove arsenic from wastewater by heterogeneous nucleation with pH limit breaking. CHEMOSPHERE 2022; 301:134676. [PMID: 35452645 DOI: 10.1016/j.chemosphere.2022.134676] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 04/10/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
Molecular sieves have also been used for arsenic adsorption in recent years because of their special structure. In order to solve the problem of arsenic pollution in drinking water and/or industrial wastewater, ZSM-5/Fe adsorbent was prepared by loading iron on ZSM-5 molecular sieve. It is also used as an excellent adsorbent for removing arsenic and other heavy metal ions from industrial wastewater. At room temperature, the concentration of arsenic was reduced from 100 mg/L to 0.006 mg/L after the solution pH was adjusted to the range of weak acid to weak base (4-10) and 0.5 g of ZSM-5/Fe adsorbent was added for reacting 2 h. The adsorption capacity reached 40.00 mg/g, the adsorption efficiency reached 99.99%, reaching the national standard of drinking water. Adsorption thermodynamics, kinetics and isotherms showed that the adsorption mechanism of arsenic is heterogeneous nucleation adsorption (including electrostatic attraction and chemical precipitation). Moreover, ZSM-5/Fe adsorbent can adjust pH spontaneously by using non-skeleton Si-Al phase to achieve effective adsorption from weak acid to weak base. At the same time, ZSM-5/Fe adsorbent showed good reusability and stability in five cycles. This study provides an important idea for the application of ZSM-5 molecular sieve in many fields and the efficient removal of arsenic from drinking water and industrial wastewater.
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Affiliation(s)
- Guohua Li
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Xianjin Qi
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
| | - Nina Yang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Xiaoxu Duan
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Aimin Zhang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
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Maiuolo L, Olivito F, Algieri V, Costanzo P, Jiritano A, Tallarida MA, Tursi A, Sposato C, Feo A, De Nino A. Synthesis, Characterization and Mechanical Properties of Novel Bio-Based Polyurethane Foams Using Cellulose-Derived Polyol for Chain Extension and Cellulose Citrate as a Thickener Additive. Polymers (Basel) 2021; 13:2802. [PMID: 34451341 PMCID: PMC8400649 DOI: 10.3390/polym13162802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/09/2021] [Accepted: 08/16/2021] [Indexed: 01/21/2023] Open
Abstract
A novel series of bio-based polyurethane composite foams was prepared, employing a cellulose-derived polyol for chain extension and cellulose-citrate as a thickener additive. The utilized polyol was obtained from the reduction reaction of cellulose-derived bio-oil through the use of sodium borohydride and iodine. Primarily, we produced both rigid and flexible polyurethane foams through chain extension of the prepolymers. Secondly, we investigated the role of cellulose citrate as a polyurethane additive to improve the mechanical properties of the realized composite materials. The products were characterized by FT-IR spectroscopy and their morphologies were analysed by SEM. Mechanical tests were evaluated to open new perspectives towards different applications.
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Affiliation(s)
- Loredana Maiuolo
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy; (V.A.); (P.C.); (A.J.); (M.A.T.); (A.T.)
| | - Fabrizio Olivito
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy; (V.A.); (P.C.); (A.J.); (M.A.T.); (A.T.)
| | - Vincenzo Algieri
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy; (V.A.); (P.C.); (A.J.); (M.A.T.); (A.T.)
| | - Paola Costanzo
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy; (V.A.); (P.C.); (A.J.); (M.A.T.); (A.T.)
| | - Antonio Jiritano
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy; (V.A.); (P.C.); (A.J.); (M.A.T.); (A.T.)
| | - Matteo Antonio Tallarida
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy; (V.A.); (P.C.); (A.J.); (M.A.T.); (A.T.)
| | - Antonio Tursi
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy; (V.A.); (P.C.); (A.J.); (M.A.T.); (A.T.)
| | - Corradino Sposato
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Centre, S.S. 106 Ionica, km 419 + 500, 75026 Rotondella, MT, Italy; (C.S.); (A.F.)
| | - Andrea Feo
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Centre, S.S. 106 Ionica, km 419 + 500, 75026 Rotondella, MT, Italy; (C.S.); (A.F.)
| | - Antonio De Nino
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy; (V.A.); (P.C.); (A.J.); (M.A.T.); (A.T.)
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