钒掺杂氧化硅基介孔分子筛催化剂及其制备方法与应用

• Format: Patent
• Language: Chinese
• Published: 02.11.2018
• 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

本发明提供了种钒掺杂氧化硅基介孔分子筛催化剂及其制备方法与应用，该催化剂以纯硅介孔分子筛KIT-6为载体、以钒氧化物为活性组分，所述钒氧化物掺杂进入所述纯硅介孔分子筛KIT-6的骨架中，并且V、Si的摩尔比为0.1:100-8:100。本发明还提供了上述催化剂的制备方法及其在丙烷选择氧化脱氢制烯烃中的应用。本发明所提供的钒掺杂氧化硅基介孔分子筛催化剂中活性组分钒的分散度更高，活性位的浓度更大，且活性位的稳定性更高，因此，该催化剂的催化活性较高。将该催化剂应用于丙烷选择氧化脱氢制烯烃的反应中，丙烷选择氧化反应的产物丙烯和烯烃的摩尔收率分别可以达到35.6％和38.6％。 The invention provides a vanadium-doped silicon oxide-based mesoporous molecular sieve catalyst, as well as a preparation method and application thereof. According to the catalyst, a pure silicon mesoporous molecular sieve KIT-6 is taken as a carrier, vanadium oxide is taken as an active ingredient, and is doped into a framework of the pure silicon mesoporous molecular sieve KIT-6, and the molar ratio of V to Si is 0.1:100 to 8:100. The invention further provides the preparation method for the catalyst and the application of the catalyst to selective oxidative dehydrogenation of propane for production of olefin. According to the vanadium-doped silicon oxide-based mesoporous molecular sieve catalyst, the dispersity of the activ