TPR Studies of Pd/HM Catalyst for Isomerization of Light Normal Paraffins

Abstract

Abstract: TPRwas applied to study the reduction behavior of the catalyst of Pd/HMfor the iso-merization of light normal paraffins.The results show that palladium can be completely reduced with 10%H₂-Ar steam at about 200℃.The TPRspectrum consists of three reduced peaks at 27℃, 80℃ and 125℃ respectively.They corresponded to the reduction of Pd²⁺ ions occupying different sites in channels of HMand the Pd²⁺ ions are reduced by one step which is as follows: Pd²⁺ + 2e=Pd.The distribution of palladium on H-mordenite is about 10% on external surface, 65% in main channel of 12-membered ring and 25% in the channel of distorted 8-mem-bered ring.

Key words: TPR, H-mordenite, Palladium, Supported metal catalyst

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SU Yun-Lai, HU Jia-Fen, LI Quan-Zhi . TPR Studies of Pd/HM Catalyst for Isomerization of Light Normal Paraffins[J]. Chem. J. Chinese Universities, 1993, 14(8): 1151.

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TPR Studies of Pd/HM Catalyst for Isomerization of Light Normal Paraffins

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