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The positive effects of Cs added to Fe/AIPO_4-5 catalysts in CO hy-drogenation were studied.Cs-modified Fe/AIPO_4-5 catalysts prepared by im-pregnating method using non-aqueous acetone solution of iron nitrate werefound to be active and selective for CO conversion and light olefins formation.The characterizations of catalysts by TPR,TPD,XPS and Mssbauer techniquesindicated that the Cs addition promoted the reduction of the catalyst and adsorp-tion of CO on the surface of the reduced catalysts.A strong interaction betweeniron and AlPO_4-5 support was revealed.The results show that the AlPO_4-5molecular sieves not only can be used as the support of catalyst but also cancontrol the growth of carbon chain of the products and maintain the activity ofthe catalyst for CO hydrogenation.
The positive effects of Cs added to Fe / AIPO_4-5 catalysts in CO hy-drogenation were studied.Cs-modified Fe / AIPO_4-5 catalysts prepared by im-pregnating method using non-aqueous acetone solution of iron nitrate were applied to be active and selective for CO conversion and light olefins formation. The characterizations of catalysts by TPR, TPD, XPS and Mssbauer techniques indicated that the Cs addition promoted the reduction of the catalyst and adsorption of CO on the surface of the reduced catalysts. A strong interaction betweeniron and AlPO_4-5 support was revealed. The results show that the AlPO_4-5molecular sieves not only can be used as the support of catalyst but also cancontrol the growth of carbon chain of the products and maintain the activity of the catalyst for CO hydrogenation.