Direct Synthesis of Acetic Acid from CH4-CO2 by a StepWise Route over TiO2-supported Co, Pd single and bimetal catalysts
IntroductionThe conversion of CH4 and CO2 into valuable chemical products such as acetic acid is an important subject in the field of Cl chemistry. As it is known, the chemical fixation of CO2 requires consumption of hydrogen while the chemical utilization of CH4 requires oxygen; conversing CH4 and CO2 togather is an ideal reaction to combine oxygenation with reduction. The direct synthesis of acetic acid from CH4 and CO2 is an atomic economic reaction, but it is also thermodynamically unfavorable. Much work has been done to overcome such thermodynamic limitation, among which homogeneous catalytic systems were widely introduced 1-4. In recent years, a step-wise reaction technology has been established, which converses CH4 and CO2 to acetic acid directly 5-7. In the techonology, the surface carbon species CHX formation from CH4 dissociation adsorption and then inserting of CO2 into surface carbon species are regard as two limiting steps and thermodynamic limitation can be overcome by the periodic operation of catalysts8. In this paper, we advance our work to develop new catalytic systems to improve the formation rate and selectivity of acetic acid.
Zhiqin Li Wei Huang Tingdong Zhao
Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province Institute of Coal Chemistry and Engineering, Taiyuan University of Technology,Taiyuan 030024, 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
273-274
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）