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Zhou X, Kang L. A DFT study of graphene-FeNx (x = 4, 3, 2, 1) catalysts for acetylene hydrochlorination. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126495] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
Activated carbon-supported HgCl2 catalyst has been used widely in acetylene hydrochlorination in the chlor-alkali chemical industry. However, HgCl2 is an extremely toxic pollutant. It is not only harmful to human health but also pollutes the environment. Therefore, the design and synthesis of mercury-free and environmentally benign catalysts with high activity has become an urgent need for vinyl chloride monomer (VCM) production. This review summarizes research progress on the design and development of mercury-free catalysts for acetylene hydrochlorination. Three types of catalysts for acetylene hydrochlorination in the chlor-alkali chemical industry are discussed. These catalysts are a noble metal catalyst, non-noble metal catalyst, and non-metallic catalyst. This review serves as a guide in terms of the catalyst design, properties, and catalytic mechanism of mercury-free catalyst for the acetylene hydrochlorination of VCM. The key problems and issues are discussed, and future trends are envisioned.
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Recent Progress on Transition Metal Nitrides Nanoparticles as Heterogeneous Catalysts. NANOMATERIALS 2019; 9:nano9081111. [PMID: 31382459 PMCID: PMC6722748 DOI: 10.3390/nano9081111] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 12/05/2022]
Abstract
This short review aims at providing an overview of the most recent literature regarding transition metal nitrides (TMN) applied in heterogeneous catalysis. These materials have received renewed attention in the last decade due to its potential to substitute noble metals mainly in biomass and energy transformations, the decomposition of ammonia being one of the most studied reactions. The reactions considered in this review are limited to thermal catalysis. However the potential of these materials spreads to other key applications as photo- and electrocatalysis in hydrogen and oxygen evolution reactions. Mono, binary and exceptionally ternary metal nitrides have been synthetized and evaluated as catalysts and, in some cases, promoters are added to the structure in an attempt to improve their catalytic performance. The objective of the latest research is finding new synthesis methods that allow to obtain smaller metal nanoparticles and increase the surface area to improve their activity, selectivity and stability under reaction conditions. After a brief introduction and description of the most employed synthetic methods, the review has been divided in the application of transition metal nitrides in the following reactions: hydrotreatment, oxidation and ammonia synthesis and decomposition.
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Xu H, Luo G. Green production of PVC from laboratory to industrialization: State-of-the-art review of heterogeneous non-mercury catalysts for acetylene hydrochlorination. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.05.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Wu YB, Li BW, Li FX, Xue JW, Lv ZP. Synthesis and characteristics of organotin-based catalysts for acetylene hydrochlorination. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0612] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Organotin-based catalysts prepared by a facile and green synthesis route were used in the acetylene hydrochlorination reaction. In detail, organotin-based catalysts were directly synthesized by supporting both organotin and nitrogen compounds on a coal-based columnar activated carbon (AC) using both incipient wetness impregnation and calcination methods. Interestingly, upon addition of nitrogen compounds, the resultant (SnCl4 + C16H34Cl2Sn)/AC catalysts showed higher activity and stability when compared the its (SnCl4 + C16H34Cl2Sn + C2N4H4)/AC counterpart at 200 °C and a gas hourly space velocity (GHSV, C2H2 based) of 30 h−1. According to the results, organotin was demonstrated to be the active site, whereas the incorporation of nitrogen allowed partial mitigation of the loss of active components.
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Affiliation(s)
- Yi-Bo Wu
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Bo-Wen Li
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Fu-Xiang Li
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Jian-Wei Xue
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Zhi-Ping Lv
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
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Yang L, Hu R, Li H, Jia Y, Zhou Q, Wang H. The effect of interaction between La 2 AlCoO 6 and CuCl 2 on ethane oxychlorination. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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