种催化生物乙醇制备烯烃的催化剂及其制备方法

• Format: Patent
• Language: Chinese
• Published: 06.06.2017
• 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

本发明公开了种催化生物乙醇制备烯烃的催化剂的制备方法，是通过以下步骤实现的：(1)将锆源溶解于去离子水中；(2)在搅拌条件下，将沉淀剂滴加入锆源水溶液中，滴加完毕后，继续搅拌，然后静置沉淀后进行抽滤，干燥。本发明还提供了种优化方案，即在将锆源溶解于去离子水中的过程中加入硝酸镧。本发明还提供了利用上述方法制备的催化剂ZrO或ZrO/LaO及其应用。本申请合成的ZrO在催化转化乙醇到烯烃的反应中，展现出了很好的选择性和稳定性，丙烯的收率约为32.2％～40.2％，乙烯的收率约33.0％～52.9％，大大提高了丙烯的收率，且催化剂的稳定性良好。ZrO/LaO的催化效果对于低碳烯烃更加有利，当镧和锆的摩尔比为1：100时，乙烯收率达到33.5％，丙烯收率42.3％。