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采用射频等离子体技术制备新型Cu-Co/SiO2催化剂.与直接焙烧制备的样品相比,射频等离子体处理提高了催化剂的比表面积,显著增大了活性物种Co的表面含量,有效改进了催化剂的还原性能.以CO加氢合成低碳混合醇为模型反应,在563K,5.0MPa,6000h-1,V(H2)∶V(CO)=1.6的条件下,等离子体处理和等离子体处理后再焙烧样品比673K焙烧样品的催化活性提高30.46%和65.30%,低碳醇的时空收率分别提高58.22%和76.11%.
A new type of Cu-Co / SiO2 catalyst was prepared by radio frequency plasma.Compared with the samples prepared by direct calcination, RF plasma treatment increased the specific surface area of the catalyst and significantly increased the surface content of the active species Co, effectively improving the catalytic performance of the catalyst (CO) = 1.6 under the conditions of 563K, 5.0MPa, 6000h-1, plasma treatment and plasma treatment The catalytic activity of calcined samples increased by 30.46% and 65.30%, respectively, than that of calcined samples of 673K. The space-time yield of lower alcohols increased by 58.22% and 76.11%, respectively.