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Stability Enhancement of H-Mordenite in Dimethyl Ether Carbonylation to Methyl Acetate by Pre-adsorption of Pyridine
Liu Junlong2; Xue Huifu2; Huang Xiumin2; Wu Pei-Hao1; Huang Shing-Jong3; Liu Shang-Bin1; Shen Wenjie2
KeywordDimethyl Ether Carbonylation Methyl Acetate H-mordenite Pyridine Stability
Source PublicationCHINESE JOURNAL OF CATALYSIS
2010-07-01
DOI10.1016/S1872-2067(09)60081-4
Volume31Issue:7Pages:729-738
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordHALIDE-FREE CARBONYLATION ; VAPOR-PHASE CARBONYLATION ; ACIDIC ZEOLITES ; SELECTIVE CARBONYLATION ; HETEROGENEOUS CATALYSTS ; EPOXIDATION CATALYSTS ; BRONSTED ACIDITY ; XE-129 NMR ; METHANOL ; H-ZSM-5
AbstractThe carbonylation of dimethyl ether to methyl acetate over H-mordenite (HMOR) and pyridine-modified HMOR was compared. The catalytic stability of HMOR was improved significantly by pyridine pre-adsorption, and a yield of methyl acetate similar to 30% was still obtained after 48 h on stream at 473 K. In situ infrared spectroscopy and ammonia temperature-programmed desorption revealed that pyridine preferentially occupied the acidic sites in 12-membered ring pores but not the acidic sites in 8-membered ring pores. (129)Xe NMR studies suggested that the channels of HMOR were blocked by coke in the reaction but those in the pyridine-modified HMOR were not. The acidic sites in the 12-membered ring pores were responsible for the deactivation of HMOR, and the reaction can be directed to occur mainly on the acidic sties in the 8-membered ring pores by the selective adsorption of pyridine in the 12-membered ring pores.
Language英语
WOS IDWOS:000280868900003
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/141866
Collection中国科学院大连化学物理研究所
Affiliation1.Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Taiwan Natl Univ, Dept Chem, Taipei 10617, Taiwan
Recommended Citation
GB/T 7714
Liu Junlong,Xue Huifu,Huang Xiumin,et al. Stability Enhancement of H-Mordenite in Dimethyl Ether Carbonylation to Methyl Acetate by Pre-adsorption of Pyridine[J]. CHINESE JOURNAL OF CATALYSIS,2010,31(7):729-738.
APA Liu Junlong.,Xue Huifu.,Huang Xiumin.,Wu Pei-Hao.,Huang Shing-Jong.,...&Shen Wenjie.(2010).Stability Enhancement of H-Mordenite in Dimethyl Ether Carbonylation to Methyl Acetate by Pre-adsorption of Pyridine.CHINESE JOURNAL OF CATALYSIS,31(7),729-738.
MLA Liu Junlong,et al."Stability Enhancement of H-Mordenite in Dimethyl Ether Carbonylation to Methyl Acetate by Pre-adsorption of Pyridine".CHINESE JOURNAL OF CATALYSIS 31.7(2010):729-738.
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