Methane oxybromination over Rh-based catalysts: Effect of supports

被引：1
|
作者：
Wang, Peng [1 ]
Chen, Lang [1 ]
Shen, Sheng [1 ]
Au, Chak-Tong [2 ]
Yin, Shuangfeng [1 ]
机构：
[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Hunan Prov Key Lab Cost Effect Utilizat Fossil Fu, Changsha 410082, Peoples R China
[2] Hunan Inst Engn, Coll Chem & Chem Engn, Xiangtan 411104, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2020年 / 28卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Methane conversion; Oxybromination; Methyl bromide; Rhodium catalyst; OXIDATIVE BROMINATION; HIGHER HYDROCARBONS; LIGHT OLEFINS; ACETIC-ACID; GAS; HYDROGENATION; SILICALITE-1; CONVERSION; CH3BR; TRANSFORMATION;
D O I：
10.1016/j.cjche.2019.09.001
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Bromine mediation has been regarded as one of the most efficient ways to activate and convert methane to useful organics. This artide reports the effects of active components (Rh, Ru. Pd and Pt) and supports (SiO2, MgO and Al2O3) on the catalysis of methane oxybromination. Among the prepared catalysts, Rh/SiO2 is the best in performance (CH4 conversion of ca. 20% and CH3Br selectivity exceeding 70%). The results reveal that support type has a notable influence on the catalytic performance of Rh, especially on product distribution. The high selectivity to CH3Br over Rh/SiO2 is attributed to its low propensity for CH3Br oxidation. It was found that Rh small in particle size shows high catalytic activity and CH3Br selectivity. Although silicalite-1 zeolite suffers from a certain degree of structural damage due to the presence of high temperature steam, the use of silicalite-1 as support results in a performance comparable to that of Rh/SiO2. (C) 2019 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
引用
收藏
页码：1809 / 1815
页数：7
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