Higher hydrocarbons from methane condensation mediated by HBr

Higher hydrocarbons from methane condensation mediated by HBr
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HBr 介导的甲烷缩合生成高级烃

DOI:
10.1016/j.molcata.2007.03.045
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发表时间:
2007-08
影响因子:
--
通讯作者:
--
中科院分区:
化学2区
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在两段串联反应器中,甲烷单程转化率为30%,总碳选择性为90%。甲烷与HBr和氧气在第一催化剂床中在660°C下反应以形成CH 3Br和CH 2Br 2,而CH 3Br和CH 2Br 2在第二催化剂床中在240°C下转化为高级烃。一种可重复使用的吸附材料MgO/SiO2已被确定用于从H2O和烯烃中分离HBr(在200°C下进行),从而使溴的回收和烯烃的纯化变得可行。
Methane condensation to higher hydrocarbons with a single-pass methane conversion of 30% and total carbon selectivity of 90% has been achieved in a system of two-stage serial reactors. Methane reacts with HBr and oxygen in the first catalyst bed at 660°C to form CH3Br and CH2Br2, while CH3Br and CH2Br2are converted to higher hydrocarbons in the second catalyst bed at 240°C. A reusable sorption material MgO/SiO2has been identified for the separation of HBr from H2O and olefins (performed at 200°C), making the recovery of bromine and the purification of olefins feasible.
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