Preparation method and application of chromium oxide/aluminum oxide catalyst

• Main Authors: LIU XUE, CAI YU, GUO YAJUN, HU CHANGLONG, LANG WANZHONG, CHU LIANFENG
• Format: Patent
• Language: Chinese; English
• Published: 18.09.2013
• Subjects: 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

The invention discloses a preparation method of a chromium oxide/aluminum oxide catalyst and an application of the chromium oxide/aluminum oxide catalyst in preparing alkene by dehydrogenating low-carbon alkane, and particularly relates to a catalyst and a preparation method thereof. The high-property catalyst for preparing propylene by dehydrogenating propane is obtained by synthesizing a catalyst active component, namely chromium oxide, through a chromium source, an aluminum source, a template agent and deionized water by adopting a hydrothermal one-step synthesis method and uniformly dispersing the chromium oxide on a carrier, namely porous aluminum oxide. The prepared catalyst has the advantages of higher propane transformation ratio, good propylene selectivity and lower cost. The preparation method of the propane dehydrogenation catalyst has the outstanding advantages of low catalyst cost, simple preparation method and large-scale industrial production; the prepared catalyst has the advantages of high ac