Pd、Cu-La_2O_3/SiO_2催化剂用于CO_2+H_2反应的研究

HYDROGENATION OF CO_2 OVER Pd AND/OR Cu SUPPORTED ON La_2O_3/SiO_2

Pd and /or Cu - La2O3/SiO2 catalysts were prepared by Pd and/or Cu supported on La2O3/SiO2 with impregnation The capacities of catalysts reduction and the performance of reaction were studied by H2-TPR and hydrogenation of CO2 The results of H2-TPR indicate that increasing the content of CuO is advantageous to the reduction of high dispersing CuO, but adding La2O3 hinder the reduction of high dispersing CuO It was found that Pd-Cu alloy formed while Pd, Cu impregnated on La2O3/SiO2 The results of hydrogenation of CO2 indicate that CO2 conversion is promoted by adding La2O3 increasing the content of CuO The thermal stablity of methanol formation was improved by adding La2O3 Aldehyde can be obtained when Pd-Cu were used as active components, and the production of methanol was related to the content of Pd loaded on the

Pd and /or Cu - La_2O_3/SiO_2 catalysts were prepared by Pd and/or Cu supported on La_2O_3/SiO_2 with impregnation The capacities of catalysts reduction and the performance of reaction were studied by H_2-TPR and hydrogenation of CO_2 The results of H_2-TPR indicate that increasing the content of CuO is advantageous to the reduction of high dispersing CuO, but adding La_2O_3 hinder the reduction of high dispersing CuO It was found that Pd-Cu alloy formed while Pd, Cu impregnated on La_2O_3/SiO_2 The results of hydrogenation of CO_2 indicate that CO_2 conversion is promoted by adding La_2O_3 increasing the content of CuO The thermal stablity of methanol formation was improved by adding La_2O_3 Aldehyde can be obtained when Pd-Cu were used as active components, and the production of methanol was related to the content of Pd loaded on the support