K-CoMoS催化剂上合成气制低碳醇的宏观动力学OA北大核心CSTPCD

A kinetic experiment was designed for the synthesis of higher alcohols from syngas using the K promoted MoS2 catalyst incorporated with Co(K-CoMoS),and the reaction results in a fixed bed reactor were obtained and the corresponding apparent kinetic models of CO consumption and higher alcohols formation were established.The regression results of model parameters show that the activation energy of CO consumption is 105.16 kJ·mol-1,and the energies of higher alcohols chain growth and chain termination are 56.9 kJ·mol-1 and 55.2 kJ·mol-1 respectively.Furthermore,the chain growth rate is lower than the chain termination rate,indicating that the chain growth is the key rate control step.It was predicted by the kinetic model that increasing the CO partial pressure is beneficial for improving the selectivity of higher alcohols,which is consistent with the experimental result.