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采用 0 1%Pt/MgAl2 O4催化剂研究了H2 或合成气的添加对高碳烷烃模型化合物正己烷氧化裂解制低碳烯烃反应的影响 .添加H2 实验中 ,随n(H2 ) /n(O2 ) 从 0增加到 3,产物中COx 的选择性迅速由 2 2 4 %降到 4 3% ,低碳烯烃的选择性则从6 1 5 %增加到 73 8% ,正己烷的转化率从 6 2 0 %增加到 72 8% .添加合成气对低碳烯烃和CO选择性的影响与添加H2 的影响相同 ,只是添加合成气时正己烷的转化率下降了 6 %左右 .添加合成气的正己烷氧化裂解过程可提供组成可调的产物 (含有低碳烯烃、H2 和CO) ,可不经分离直接用作加氢甲酰化生产低碳烯烃衍生物过程的原料 .
The effect of H2 or syngas on the reaction of n-hexane to produce light olefins was investigated by using 0 1% Pt / MgAl2 O4 catalyst. The results obtained with n (H2) / n (O2) From 0 to 3, the selectivity of COx in the product rapidly decreased from 22.4% to 43%, the selectivity of light olefins increased from 61.5% to 73.8%, and the conversion of n-hexane increased from 62 0% to 72 8%. The effect of adding syngas on the selectivity to light olefins and CO was the same as adding H2, except that the conversion of n-hexane was reduced by about 6% with the addition of syngas. The addition of syngas to n-hexane The oxidative cleavage process provides feedstocks with adjustable composition (containing light olefins, H2 and CO) that can be used directly without separation for the hydroformylation of light olefins derivatives.