高校化学工程学报2024，Vol.38Issue(4)：578-585,8.DOI:10.3969/j.issn.1003-9015.2024.04.006
Ru/AC和Ru-NPs/AC催化剂对乙炔氢氯化反应催化活性的比较
Comparison of catalytic activity of Ru/AC and Ru-NPs/AC catalysts for acetylene hydrochlorination
摘要
Abstract
Ru-based catalysts are one of the most applicable catalysts in industry for the development of mercury-free acetylene hydrochlorination catalysts.The difference of catalytic performance between Ru/AC and Ru-NPS/AC after the high-temperature H2 treatment was investigated by Brunauer-Emmett-Teller(BET),temperature programmed reduction(TPR),transmission electron microscopy(TEM),temperature programmed desorption(TPD)and kinetic experiments.By exclusion of internal and external diffusion,the reaction orders were investigated by kinetic experiments,and the elementary reaction steps and velocity determination steps were preliminarily proposed.The results show that Ru-NPS/AC demonstrates lower catalytic activity than Ru/AC for acetylene hydrochlorination with a higher apparent activation energy,which is due to the decrease of active center dispersion and the reduction of Ru species after high-temperature H2 treatment.It results in the decrease of C2H2 adsorption capacity of active center.关键词
乙炔氢氯化/Ru基催化剂/反应级数/表观活化能/活性中心Key words
acetylene hydrochlorination/Ru-based catalyst/reaction order/apparent activation energy/active center分类
化学化工引用本文复制引用
徐达,王赛赛,马腾云,万立祺,赵佳,蔡海婷,李小年..Ru/AC和Ru-NPs/AC催化剂对乙炔氢氯化反应催化活性的比较[J].高校化学工程学报,2024,38(4):578-585,8.基金项目
国家自然科学基金(22208299) （22208299）
国家重点研发计划(2021YFA1501801). （2021YFA1501801）
