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TPR技术具有准确、简便等特性而被广泛用于研究金属催化剂的还原过程。Mahoney和Hurst等曾研究了Pd/NaX和Pd/NaY的TPR行为,但对轻质烷烃异构化催化剂Pd/HM的TPR研究尚未见报道。本文对Pd/HM的TPR谱中各峰进行了归属,讨论了Pd/HM的还原及吸附H_2机理及钯在丝光沸石孔道中的分布,为Pd/HM的制备提供了有益的信息。
TPR technology is accurate and easy to use and has been widely used to study the metal catalyst reduction process. Mahoney and Hurst et al. Studied the TPR behavior of Pd / NaX and Pd / NaY, but no studies on the TPR of Pd / HM for the light paraffin isomerization catalyst have been reported. In this paper, the peaks of TPR spectrum of Pd / HM were assigned. The reduction of Pd / HM and the mechanism of H2 adsorption as well as the distribution of palladium in the pores of mordenite were discussed, which provided useful information for the preparation of Pd / HM.