Coupling dehydrogenation of isobutane to produce isobutene in carbon dioxide over NiO/γ-Al2O3 catalyst
Coupling dehydrogenation of isobutane to produce isobutene in carbon dioxide over NiO/γ-Al2O3 catalyst
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DOI：
10.1007/s11144-010-0220-0
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发表时间：
2010-07
期刊：
影响因子：
--
通讯作者：
Jianfei Ding;Rong Shao;Jun Wu;Zhangfeng Qin;Jianguo Wang
中科院分区：
文献类型：
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作者：
Jianfei Ding;Rong Shao;Jun Wu;Zhangfeng Qin;Jianguo Wang
The dehydrogenation of isobutane to produce isobutene coupled with reverse water gas shift (RWGS) reaction in the presence of carbon dioxide was investigated over a NiO/γ-Al2O3catalyst. The results illustrated that the coupling dehydrogenation of isobutane in carbon dioxide over NiO/γ-Al2O3catalyst is effective, and the NiO/Al2O3catalyst was modified with deposited carbon by impregnation of alumina with an aqueous solution of Ni(H2NCH2CH2NH2)x(NO3)2. Carbon modification can decrease the total acidity of the NiO/γ-Al2O3catalyst and enhance the dispersion of NiO active phase. Furthermore, carbon has low acidity and anti-coking performance, so the carbon modification is effective in suppressing the coke formation and side reactions occurrence. Therefore, the catalyst stability and the isobutene selectivity are improved significantly by the carbon modification.
