天然气化工（C1化学与化工）
天然氣化工（C1化學與化工）
천연기화공（C1화학여화공）
Natural Gas Chemical Industry
2015年
4期
19-23
,共5页
赵立红%闫捷%魏灵朝%蒋元力%房克功%孙予罕
趙立紅%閆捷%魏靈朝%蔣元力%房剋功%孫予罕
조립홍%염첩%위령조%장원력%방극공%손여한
Ni/β-Mo2C催化剂%K改性%溶胶-凝胶法%CO加氢%低碳醇
Ni/β-Mo2C催化劑%K改性%溶膠-凝膠法%CO加氫%低碳醇
Ni/β-Mo2C최화제%K개성%용효-응효법%CO가경%저탄순
Ni/β-Mo2C catalyst%sol-gel method%carbon monoxide hydrogenation%higher alcohols%K doping
采用溶胶凝胶法及程序升温碳化法制备了K改性的Ni/β-Mo2C催化剂，通过XRD、N2吸附-脱附分析和TEM等手段表征了催化剂的织构特征。考察了K含量对Ni/β-Mo2C催化剂CO加氢合成低碳醇反应性能的影响。实验结果表明：K改性Ni/β-Mo2C具有较高的CO加氢反应活性，产物以C1-4烷烃为主；适量K助剂的引入能大大提高催化剂的比表面积，有利于提高催化剂的合成低碳醇能力；过量K助剂的引入降低了催化剂的比表面积且与Mo形成了惰性的K2MoO4，降低了催化剂的活性。
採用溶膠凝膠法及程序升溫碳化法製備瞭K改性的Ni/β-Mo2C催化劑，通過XRD、N2吸附-脫附分析和TEM等手段錶徵瞭催化劑的織構特徵。攷察瞭K含量對Ni/β-Mo2C催化劑CO加氫閤成低碳醇反應性能的影響。實驗結果錶明：K改性Ni/β-Mo2C具有較高的CO加氫反應活性，產物以C1-4烷烴為主；適量K助劑的引入能大大提高催化劑的比錶麵積，有利于提高催化劑的閤成低碳醇能力；過量K助劑的引入降低瞭催化劑的比錶麵積且與Mo形成瞭惰性的K2MoO4，降低瞭催化劑的活性。
채용용효응효법급정서승온탄화법제비료K개성적Ni/β-Mo2C최화제，통과XRD、N2흡부-탈부분석화TEM등수단표정료최화제적직구특정。고찰료K함량대Ni/β-Mo2C최화제CO가경합성저탄순반응성능적영향。실험결과표명：K개성Ni/β-Mo2C구유교고적CO가경반응활성，산물이C1-4완경위주；괄량K조제적인입능대대제고최화제적비표면적，유리우제고최화제적합성저탄순능력；과량K조제적인입강저료최화제적비표면적차여Mo형성료타성적K2MoO4，강저료최화제적활성。
K doped Ni/β-Mo2C catalysts were prepared by sol-gel method and temperature programmed carburization method, and their structure and morphology were characterized by XRD, BET and TEM. The effect of K amount on the catalytic behavior of the catalysts for hydrogenation of CO to higher alcohols was investigated in a fixed bed reactor. The results showed that the K doped Ni/β-Mo2C catalysts exhibited high activity for CO hydrogenation reaction and C1-4 alkanes were the main products. The addition of an appropriate amount of K could greatly increased the surface area of the Ni/β-Mo2C catalysts and enhanced both activity and selectivity towards C2 + alcohols. However, when an excessive amount of K was added, the surface area of the catalysts decreased and inert K2MoO4 was formed, which resulted in the decrease of the catalytic activity.
