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Li D, Shen J, Zhang J, Chai Y, Xie Y, Qiu C, Ni M, Zheng Y, Wang X, Zhang Z. Photocatalytic Chlorination of Methane Using Alkali Chloride Solution. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Dongmiao Li
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Jinni Shen
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Jiangjie Zhang
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Yao Chai
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Yanyu Xie
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Chengwei Qiu
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Mengmeng Ni
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Yuanhui Zheng
- College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Xuxu Wang
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Zizhong Zhang
- State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, People’s Republic of China
- Qingyuan Innovation Laboratory, Fuzhou University, Quanzhou 362801, People’s Republic of China
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Wang J, Liu C, Zhu P, Liu H, Zhang X. Mercaptosilane-assisted synthesis of highly dispersed and stable Pt nanoparticles on HL zeolites for enhancing hydroisomerization of n-hexane. NEW J CHEM 2022. [DOI: 10.1039/d1nj05774j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pt/HL-SH catalysts were synthesized by a facile mercaptosilane-assisted in situ synthesis approach and exhibited better catalytic performance in n-hexane hydroisomerization.
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Affiliation(s)
- Jinshan Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Cun Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Peng Zhu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Haiou Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Xiongfu Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
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Abstract
Chloromethanes are a group of volatile organic compounds that are harmful to the environment and human health. Abundant studies have verified that hydrodechlorination might be an effective treatment to remove these chlorinated pollutants. The most outstanding advantages of this technique are the moderate operating conditions used and the possibility of obtaining less hazardous valuable products. This review presents a global analysis of experimental and theoretical studies regarding the hydrodechlorination of chloromethanes. The catalysts used and their synthesis methods are summarized. Their physicochemical properties are analyzed in order to deeply understand their influence on the catalytic performance. Moreover, the main causes of the catalyst deactivation are explained, and prevention and regeneration methods are suggested. The reaction systems used and the effect of the operating conditions on the catalytic activity are also analyzed. Besides, the mechanisms and kinetics of the process at the atomic level are reviewed. Finally, a new perspective for the upgrading of chloromethanes, via hydrodechlorination, to valuable hydrocarbons for industry, such as light olefins, is discussed.
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A Comprehensive Review of the Applications of Hierarchical Zeolite Nanosheets and Nanoparticle Assemblies in Light Olefin Production. Catalysts 2020. [DOI: 10.3390/catal10020245] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Light olefins including ethylene, propylene and butylene are important building blocks in petrochemical industries to produce various chemicals such as polyethylene, polypropylene, ethylene oxide and cumene. Traditionally, light olefins are produced via a steam cracking process operated at an extremely high temperature. The catalytic conversion, in which zeolites have been widely used, is an alternative pathway using a lower temperature. However, conventional zeolites, composed of a pure microporous structure, restrict the diffusion of large molecules into the framework, resulting in coke formation and further side reactions. To overcome these problems, hierarchical zeolites composed of additional mesoporous and/or macroporous structures have been widely researched over the past decade. In this review, the recent development of hierarchical zeolite nanosheets and nanoparticle assemblies together with opening up their applications in various light olefin productions such as catalytic cracking, ethanol dehydration to ethylene, methanol to olefins (MTO) and other reactions will be presented.
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Kolesnichenko NV, Ezhova NN, Snatenkova YM. Lower olefins from methane: recent advances. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4900] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Modern methods for methane conversion to lower olefins having from 2 to 4 carbon atoms per molecule are generalized. Multistage processing of methane into ethylene and propylene via syngas or methyl chloride and methods for direct conversion of CH4 to ethylene are described. Direct conversion of syngas to olefins as well as indirect routes of the process via methanol or dimethyl ether are considered. Particular attention is paid to innovative methods of olefin synthesis. Recent achievements in the design of catalysts and development of new techniques for efficient implementation of oxidative coupling of methane and methanol conversion to olefins are analyzed and systematized. Advances in commercializing these processes are pointed out. Novel catalysts for Fischer – Tropsch synthesis of lower olefins from syngas and for innovative technique using oxide – zeolite hybrid catalytic systems are described. The promise of a new route to lower olefins by methane conversion via dimethyl ether is shown. Prospects for the synthesis of lower olefins via methyl chloride and using non-oxidative coupling of methane are discussed. The most efficient processes used for processing of methane to lower olefins are compared on the basis of degree of conversion of carbonaceous feed, possibility to integrate with available full-scale production, number of reaction stages and thermal load distribution.
The bibliography includes 346 references.
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Chen Z, Dong L, Chen C, Wang Y, Wang Y, Zhang J, Qian W, Hong M. Direct synthesis of core-shell MFI zeolites with spatially tapered trimodal mesopores via controlled orthogonal self-assembly. NANOSCALE 2019; 11:16667-16676. [PMID: 31461092 DOI: 10.1039/c9nr01497g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Manipulating pore hierarchy in porous materials is an attractive, yet difficult challenge in crystalline zeolites. Here, we report core-shell MFI zeolites having trimodal mesopores with size gradually decreasing from the surface to the core, synthesized through a one-pot approach via controlled orthogonal self-assembly. The novel spatially resolved mesopore structures are ascribed to the nanoscale phase separation between mutually coupled interactions of organosilane supramolecular assembly and zeolite framework ordering. The highly hierarchical zeolite architecture with tapered mesopore distribution allowed for spatially resolved adsorption of florescent molecules, improved catalytic performance in condensation reactions, and an enhanced nanoreactor for coupling reactions due to alleviated diffusion limitations. The successful synthesis of fine-tuned zeolites with larger mesopores gradually subdivided into smaller mesopores (hierarchy-type I) may open up possibilities for emergent new porous structures exhibiting a higher degree of hierarchies that are currently inaccessible to many crystalline oxide or related materials.
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Affiliation(s)
- Zhuwen Chen
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China. and College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Lei Dong
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
| | - Chao Chen
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
| | - Yanding Wang
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
| | - Ya Wang
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
| | - Jian Zhang
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
| | - Wei Qian
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
| | - Mei Hong
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
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Huang J, Wang W, Fei Z, Liu Q, Chen X, Zhang Z, Tang J, Cui M, Qiao X. Enhanced Light Olefin Production in Chloromethane Coupling over Mg/Ca Modified Durable HZSM-5 Catalyst. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05544] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | - Jihai Tang
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing 210009, People’s Republic of China
| | | | - Xu Qiao
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing 210009, People’s Republic of China
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Conversion of chloromethane to propylene over fluoride-treated H-ZSM-35 zeolite catalysts. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2018.10.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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9
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Chen H, Yang M, Shang W, Tong Y, Liu B, Han X, Zhang J, Hao Q, Sun M, Ma X. Organosilane Surfactant-Directed Synthesis of Hierarchical ZSM-5 Zeolites with Improved Catalytic Performance in Methanol-to-Propylene Reaction. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00849] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Huiyong Chen
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
| | - Mengfei Yang
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
| | - Wenjin Shang
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
| | - Yao Tong
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
| | - Baoyu Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong 510006, People’s Republic of China
| | - Xiaolong Han
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
| | - Jianbo Zhang
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
| | - Qingqing Hao
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
| | - Ming Sun
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
| | - Xiaoxun Ma
- School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China
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