种用于丙烷脱氢制丙烯的催化剂的制备方法及其催化剂

• Format: Patent
• Language: Chinese
• Published: 19.02.2019
• 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

本发明涉及种用于丙烷脱氢制丙烯的催化剂的制备方法，以第Ⅳ族元素金属和第Ⅲ族元素金属组合的双金属为助剂，以铂族元素金属为催化剂脱氢的活性组分，以成型氧化铝为载体。催化剂的制备过程包括：将Sn-Al助剂采用共浸渍法引入氧化铝载体，使Sn在载体中以原子水平更均匀地分散，同时增强Sn与氧化铝载体之间的作用力；然后在含Sn-Al的氧化铝载体上浸渍脱氢活性组分，提高金属-助剂-载体之间的相互作用力；最后进行干燥焙烧、脱氯、浸渍碱金属助剂、浸渍稀盐酸和硫化等后处理最终得到脱氢催化剂。本发明的催化剂可用于低碳烷烃脱氢反应，尤其丙烷脱氢反应，具有活性高，选择性好、催化剂稳定性好等优点，尤其是选择性和稳定性提高明显。 The invention relates to a preparation method of a catalyst for preparing propylene by propane dehydrogenation. The Group IV metal-Group III metal bimetal combination is used as an aid, a platinum group metal is used as the dehydrogenation active component of the catalyst, and formed alumina is used as the support. The preparation process of the catalyst comprises the following steps: introducing the alumina support into the Sn-Al aid by co-impregnation so that the Sn is dispersed in the support more uniformly on the atom level, thereby enhancing the acting force between the Sn and alumina support; impregnating the Sn-Al-containing alumina support with the dehydrogenation active component to enhance the interact