Composite catalyst for dimethyl ether synthesis and preparation method and application thereof

The invention relates to a composite catalyst for dimethyl ether synthesis and a preparation method and an application thereof. The composite catalyst is prepared by mixing the methanol synthesis catalyst and the methanol conversion catalyst, wherein the methanol synthesis catalyst is Cu-Zn-Al compo...

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Hauptverfasser:	TONG ZEMIN, LIU WEIGUO, HAN ZHANSHENG, CHI YAOLING, SUN GAOFENG, ZHANG QIANWEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a composite catalyst for dimethyl ether synthesis and a preparation method and an application thereof. The composite catalyst is prepared by mixing the methanol synthesis catalyst and the methanol conversion catalyst, wherein the methanol synthesis catalyst is Cu-Zn-Al composite oxide, the methanol conversion catalyst is a solid acid catalyst; and the two catalysts adopt power-mixing and granule-mixing methods to prepare the dimethyl ether synthesis catalyst. The invention has the following advantages: the CO conversion per pass is high, the selectivity of DME is good, the carbon dioxide resistance and water resistance of the catalyst are high, and the catalyst has wider application range. The composite catalyst of the invention is used for synthesizing dimethyl ether directly with synthesis gas.