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Huang Y, Xiong F, Zou Z, Huang Y, Zhao Z, Liu B, Dong J. Fabrication of β-Zeolite Nanocrystal Aggregates for the Alkylation of Benzene and Cyclohexene. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yeqing Huang
- School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Feng Xiong
- School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Zhenyuan Zou
- School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Yi Huang
- School of Engineering, Institute for Materials & Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, United Kingdom
| | - Zhenxia Zhao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Baoyu Liu
- School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology, Guangzhou 510006, P. R. China
- Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory (Rongjiang Laboratory), Jieyang 515200, P. R. China
| | - Jinxiang Dong
- School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology, Guangzhou 510006, P. R. China
- Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory (Rongjiang Laboratory), Jieyang 515200, P. R. China
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Deep-hydrogenation of aviation turbine fuel over highly active and robust magneto-sensitive nanocatalyst. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1007/s43153-021-00211-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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3
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Nasser GA, Ahmed MHM, Firdaus MA, Sanhoob MA, Bakare IA, Al-Shafei EN, Al-Bahar MZ, Al-Jishi AN, Yamani ZH, Choi KH, Muraza O. Nano BEA zeolite catalysts for the selective catalytic cracking of n-dodecane to light olefins. RSC Adv 2021; 11:7904-7912. [PMID: 35423304 PMCID: PMC8695071 DOI: 10.1039/d0ra07899a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 01/05/2021] [Indexed: 11/29/2022] Open
Abstract
Nano BEA zeolite catalysts were synthesized and modified by desilication and then ion-exchanged with Co. The desilication was carried out using 0.1 M of NaOH. The synthesized and modified nano BEA catalysts were characterized via different characterization techniques. Ammonia temperature program desorption (NH3-TPD) and the pyridine Fourier transform infrared (pyridine-FTIR) were utilized to investigate the acidity of catalysts. X-ray diffraction (XRD), 27Al and 29Si nuclear magnetic resonance (NMR) spectroscopy techniques were used to examine the structure of the catalysts. The XRD patterns of the as-synthesized nano BEA catalysts were identical to that of the reference, while the NMR analysis revealed the distribution of silicon and aluminum in the BEA structure. The scanning electron microscope (SEM) analysis confirmed that the fabricated catalysts were less than 100 nm. The desilication and Co ion-exchange altered the acidity of the catalyst. The catalysts were evaluated in the cracking of sssssss to light olefins in the temperature range from 400 °C to 600 °C. The conversion increased with the increase in the reaction temperature for both catalysts; the conversion was above 90% for the Co-BEA catalyst at a temperature above 450 °C. The yield of light olefins also increased at higher temperatures for both catalysts, while at a lower temperature the yield to light olefins was ca. 40% over that of Co-BEA. Nano BEA zeolite catalysts were synthesized and modified by desilication and then ion-exchanged with Co. The desilication was carried out using 0.1 M of NaOH.![]()
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Affiliation(s)
- Galal A Nasser
- Center of Excellence in Nanotechnology and Chemical Engineering Department, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
| | - M H M Ahmed
- Center of Excellence in Nanotechnology and Chemical Engineering Department, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
| | - Mochamad A Firdaus
- Center of Excellence in Nanotechnology and Chemical Engineering Department, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
| | - Mohammed A Sanhoob
- Center of Excellence in Nanotechnology and Chemical Engineering Department, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
| | - Idris A Bakare
- Center of Excellence in Nanotechnology and Chemical Engineering Department, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
| | - E N Al-Shafei
- Research and Development Center, Saudi Aramco Dhahran 31311 Saudi Arabia
| | - M Z Al-Bahar
- Research and Development Center, Saudi Aramco Dhahran 31311 Saudi Arabia
| | - A N Al-Jishi
- Research and Development Center, Saudi Aramco Dhahran 31311 Saudi Arabia
| | - Z H Yamani
- Center of Excellence in Nanotechnology and Chemical Engineering Department, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
| | - Ki-Hyouk Choi
- Research and Development Center, Saudi Aramco Dhahran 31311 Saudi Arabia
| | - Oki Muraza
- Center of Excellence in Nanotechnology and Chemical Engineering Department, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
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Xian X, Chen J, Chu Y, He M, Zhao S, Dong L, Ren J. Unraveling the spatial distribution of the acidity of
HZSM
‐5 zeolite on the level of crystal grains. AIChE J 2021. [DOI: 10.1002/aic.17134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Xiaochao Xian
- School of Chemistry and Chemical Engineering Chongqing University Chongqing China
| | - Jun Chen
- School of Chemistry and Chemical Engineering Chongqing University Chongqing China
| | - Yirong Chu
- School of Chemistry and Chemical Engineering Chongqing University Chongqing China
| | - Mengjun He
- School of Chemistry and Chemical Engineering Chongqing University Chongqing China
| | - Shuo Zhao
- School of Chemistry and Chemical Engineering Chongqing University Chongqing China
| | - Lichun Dong
- School of Chemistry and Chemical Engineering Chongqing University Chongqing China
| | - Jingzheng Ren
- Department of Industrial and Systems Engineering The Hong Kong Polytechnic University Kowloon Hong Kong
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5
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Ye D, Zhao L, Bai S, Guo Y, Fang W. New Strategy for High-Performance Integrated Catalysts for Cracking Hydrocarbon Fuels. ACS APPLIED MATERIALS & INTERFACES 2019; 11:40078-40090. [PMID: 31517475 DOI: 10.1021/acsami.9b14285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, we described the synthesis, characterization, and application of hyperbranched polymer-encapsulated metal nanoparticles (HEMNs) as integrated catalysts for the supercritical cracking of hydrocarbon fuels. The metal precursor was extracted into the organic phase using a hydrocarbon-soluble hyperbranched poly(amidoamine) (CPAMAM) and then reduced in situ by NaBH4 to produce HEMNs with virtually a single-size distribution. The monitoring of the preparation process by UV-vis demonstrated the feasibility of this encapsulation approach, and the successful synthesis of three different types of HEMNs, metal (Pd, Pt, Au)@CPAMAM, reflected the universality of this method. Compared with the existing catalyst octadecylamine-stabilized Pd nanoparticle, Pd@18N, HEMNs were superior in every aspect. The new encapsulation method allowed metal NPs to have a smaller particle size beneficial to their overall specific surface area and a higher proportion of active surface atoms for a better catalytic activity. Moreover, the space-limiting effect of the polymer allowed the three HEMNs to be highly dispersed in decalin and exhibited admirable stability under storage tests for up to 12 months and high-temperature stability tests at 180 °C. During the supercritical cracking of decalin, Pd@CPAMAM possessed a much better catalytic performance than Pd@18N and CPAMAM (which can also be used as a macroinitiator). To obtain the same heat sink of 3.02 MJ/kg, the temperature could be lowered from 725 to 701, 693, and 699 °C for Pd, Pt, and Au HEMNs, respectively. Pt HEMN turned out to be the best due to its excellent catalytic dehydrogenation/cracking performance, with the conversion of decalin increasing from 22.3 to 50.7% and the heat sink rising from 2.18 to 2.62 MJ/kg with the existence of 50 ppm Pt@CPAMAM, at 675 °C. The significant enhancements were ascribed to the synergistic catalysis through the remarkable abilities of nanometals to catalyze dehydrogenation/cracking of fuel, the supercritical stabilization effects from CPAMAM, and the initiation effects of the hyperbranched polymer CPAMAM.
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Affiliation(s)
- Dengfeng Ye
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , China
| | - Lu Zhao
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , China
| | - Shuaishuai Bai
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , China
| | - Yongsheng Guo
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , China
| | - Wenjun Fang
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , China
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Li R, Chong S, Altaf N, Gao Y, Louis B, Wang Q. Synthesis of ZSM-5/Siliceous Zeolite Composites for Improvement of Hydrophobic Adsorption of Volatile Organic Compounds. Front Chem 2019; 7:505. [PMID: 31380349 PMCID: PMC6647869 DOI: 10.3389/fchem.2019.00505] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/02/2019] [Indexed: 11/23/2022] Open
Abstract
In this research, we investigated the hydrophobicity and dynamic adsorption-desorption behaviors of volatile organic compounds (VOCs) by applying different optimized coating dosage (25, 50, and 75%) on designed novel ZSM-5/MCM-41 and ZSM-5/Silicalite-1 hierarchical composites. The relatively large specific surface area and pore volume of adsorbents ZSM-5/MCM-41 and ZSM-5/Silicalite-1 composites with excellent stability were affirmed by ex-situ XRD, FTIR, BET, SEM, and water contact angle analyses. Regarding, toluene adsorption-desorption investigation, ZSM-5/MCM-41 composite lead a longer stable toluene breakthrough time no matter under dry or 50% humid conditions. However, under different loading dosage condition, the breakthrough time of 75% coating ratio was the longest, which was 1.6 times as long as that of pure ZSM-5 under wet adsorption. Meanwhile, the complete elimination of toluene for ZSM-5/MCM-41-75% was done by largest desorption peak area and the lowest desorption temperature of 101.9°C, while, the largest contact angle of ZSM-5/MCM-41-75% was 17.0° higher than pure ZSM-5 zeolite. Therefore, we believe that the present hydrophobic sorbent will provide new insight with great research potential for removing low concentration of VOCs at industrial scale.
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Affiliation(s)
- Renna Li
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Shijia Chong
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Naveed Altaf
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Yanshan Gao
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Benoit Louis
- ICPEES - Institut de Chimie et Procédés pour l'Énergie, l'Environnement et la Santé, UMR 7515 CNRS - Université de Strasbourg, Strasbourg, France
| | - Qiang Wang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
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7
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Hosseini M, Masteri‐Farahani M. Surface Functionalization of Magnetite Nanoparticles with Sulfonic Acid and Heteropoly Acid: Efficient Magnetically Recoverable Solid Acid Catalysts. Chem Asian J 2019; 14:1076-1083. [DOI: 10.1002/asia.201801810] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 01/26/2019] [Indexed: 11/09/2022]
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8
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Ishihara A, Mori K, Mori K, Hashimoto T, Nasu H. Preparation of hierarchical catalysts with the simultaneous generation of microporous zeolite using a template and large mesoporous silica by gel skeletal reinforcement and their reactivity in the catalytic cracking of n-dodecane. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00693a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zeolite-containing hierarchical mesoporous catalysts prepared using gel skeletal reinforcement exhibited the superior activity and selectivity in n-dodecane catalytic cracking.
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