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OALib Journal期刊
ISSN: 2333-9721
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核壳结构催化剂Cr-Zn@SiO2@SAPO-34催化合成气直接转化制低碳烃的性能
DOI: 10.1016/S1872-2067(14)60297-7, PP. 1131-1135
Keywords: 铬锌金属氧化物,分子筛,核壳结构,C2-C4烃,合成气直接转化
Abstract:
？合成气直接转化高选择性制烃类产物仍是巨大的挑战.本文合成了以Cr-Zn氧化物为核,SiO2为中间过渡层,再通过原位水热合成覆盖一层SAPO-34分子筛为壳的核壳结构催化剂.合成气转化反应结果显示,与纯Cr-Zn金属氧化物相比,核壳结构催化剂将产物分布由甲醇和甲烷移动至C2-C4烃(所有烃类产物中占66.9%).这表明核壳结构催化剂用于合成气一步法直接转化制液化石油气的反应具有可行性,但是催化剂结构和组成有待于进一步优化,以提高其催化反应性能.
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