NH4＋交换度对 CuY催化剂上甲醇氧化羰基化反应性能的影响.pdf

Chinese Journal of Catalysis 37 (2016) 1403-1412 催化学报 2016 年 第 37 卷第 8 期 | a v a i l a b l e at w w w . s c i e n c e d i r e c t . c o m ScienceDirect ELSEVIER j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / c h n j c Article Effect of NH4+ exchange on CuY catalyst for oxidative carbonylation of methanol Yuchun Wang a,b, Huayan Zheng a, Zhong L ia,* a Key Laboratory o f Coal Science and Technology o f M inistry o f Education and Shanxi Province, Taiyuan University o f Technology, Taiyuan 030024, Shanxi, China b Department o f Applied Chemistry, Yuncheng University, Yuncheng 044000, Shanxi, China A R T I C L E I N F O A B S T R A C T A rticle history: NaY and ion exchanged NaNH4Y zeolite with NH4NO3 were used as the support to prepare CuY cata­ Received 4 May 2016 lysts by a high temperature anhydrous interaction between the support and copper (II) acety- Accepted 15 June 2016 lacetonate Cu(acac)2. The catalysts were used for the oxidative carbonylation of methanol to dime­ Published 5 August 2016 thyl carbonate (DMC) at atmospheric pressure. The textural and acidic properties of NaNH4Y zeolite and the CuY catalysts were investigated by X-ray di raction, scanning electron microscopy, N2 ad­ Keywords: sorption-desorption, temperature programmed reduction of H2, X-ray photoelectron spectroscopy High temperature anhydrous and temperature programmed desorpt