ROLE OF CARBON DIOXIDE IN ISOBUTANE DEHYDROGENATION THROUGH REACTION COUPLING WITH REVERSE WATER-GAS SHIFT OVER NiO/AC CATALYST
IntroductionThe increasing demand for isobutene in recent years has drawn considerable attention to the dehydrogenation of isobutane to isobutene. However, the direct dehydrogenation of isobutane suffers from fast catalyst deactivation, low isobutane conversion, poor isobutene selectivity, high operation temperature and high energy consumption. Oxidative dehydrogenation proved to be an effective way to increase the conversion and/or lower the reaction temperature however, the desirable dehydrogenation product is vulnerable by deep oxidation when using oxygen as oxidant 1. The utilization of greenhouse gas carbon dioxide (CO2) has also received much attention, which is possible to make use of carbon-resource in CO2 and to alleviate the global warming due to the release of CO2 at the same time. For example, many affords have been made to produce alcohols 2 and hydrocarbons 3 from catalytic hydrogenation of CO2, syngas from CO2 reforming of methane 4, as well as many other chemicals from CO2 5.On the other hand, CO2 can be used as a mild oxidant in the oxidative dehydrogenation of alkanes 6-11, where the dehydrogenation is coupled with reverse water gas shift (RWGS); the dehydrogenation of alkanes in the presence of CO2 can be an effective, energy-saving and environmentally friendly process.
Jianfei Ding Zhangfeng Qin Ruihua Zhao Junfen Li Guofu Wang Jianguo Wang
State Key Laboratory of Coal Conversion Institute of Coal Chemistry, Chinese Academy of Sciences Taiyuan, Shanxi 030001, China
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
293-294
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）