Vapor-Phase Transport Synthesis of MnSAPO-34 and Its Catalytic Properties  

作　　者：Shao Hui Chen Xia Wang Binbin Zhong Jing Yang Chao 

机构地区：[1]School of Petrochemical Engineering,Changzhou University [2]Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sciences

出　　处：《China Petroleum Processing & Petrochemical Technology》2012年第3期68-74,共7页中国炼油与石油化工（英文版）

基　　金：supported by the Key Laboratory of Fine Chemicals,Jiangsu Province;financially supported by the Jiangsu Province Science and Technology Support Program (BE2011651);the Key University Science Research Project of Jiangsu Province (11KJA610002)

摘　　要：MnSAPO-34 molecular sieves were synthesized by vapor-phase transport （VPT） method using triethylamine （Et3N） as a structure directing agent （SDA）, and were characterized by XRD, BET, SEM, UV-Vis, FT-IR, and TG analy- ses. The influence of the zeolite crystallization conditions and the dry-gel composition were investigated. The results showed that the synthesis conditions had an effect on the crystalline phase. Pure MnSAPO-34 had been obtained when it was crystallized at 140 C for 18 hours. The ratio of MnO/A1203 in the starting gel ranging from 0.1 to 0.2 resulted in pure MnSAPO-34 with a CHA topology. Beyond this scope, MnSAPO-5 with an AFI topology structure was obtained as an impurity substance. UV-Vis spectroscopy and FT-IR spectroscopy study indicated that manganese was incorporated into the framework of the molecular sieve. The catalytic performance of MnSAPO-34 molecular sieve was tested by ketalization reaction of l, 2-propanediol with cyclohexanone. High yield of cyclohexanone-1, 2-propanediol ketal was obtained.MnSAPO-34 molecular sieves were synthesized by vapor-phase transport(VPT) method using triethylamine(Et3N) as a structure directing agent(SDA),and were characterized by XRD,BET,SEM,UV-Vis,FT-IR,and TG analyses.The influence of the zeolite crystallization conditions and the dry-gel composition were investigated.The results showed that the synthesis conditions had an effect on the crystalline phase.Pure MnSAPO-34 had been obtained when it was crystallized at 140℃ for 18 hours.The ratio of MnO/Al2O3 in the starting gel ranging from 0.1 to 0.2 resulted in pure MnSAPO-34 with a CHA topology.Beyond this scope,MnSAPO-5 with an AFI topology structure was obtained as an impurity substance.UV-Vis spectroscopy and FT-IR spectroscopy study indicated that manganese was incorporated into the framework of the molecular sieve.The catalytic performance of MnSAPO-34 molecular sieve was tested by ketalization reaction of 1,2-propanediol with cyclohexanone.High yield of cyclohexanone-1,2-propanediol ketal was obtained.

关 键 词：MnSAPO-34 vapor-phase transport （VPT） KETALIZATION 

分 类 号：O643.3[理学—物理化学]