Catalyst for preparing benzaldehyde through methyl benzoate hydrogenation and preparation method thereof

• Main Authors: ZHANG SHENGHONG, SUN PEIYONG, ZHANG YUEJIAO, CHEN HONGBO, JIANG YUCHENG, YAO ZHILONG, ZHOU MING
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a catalyst for preparing benzaldehyde through methyl benzoate hydrogenation and a preparation method thereof. The catalyst uses zirconia as a carrier, uses manganese oxide as an active component, and uses chromium oxide as a binder. The catalyst has high selectivity, high activity and high activity stability and is directly prepared through a mixing and kneading method, and the preparation method is simple. Further, manganese oxide is decomposed to release carbon dioxide through mixing, so that the catalyst forms a certain hole channel and framework structure, and the specific surface area of the catalyst is increased. Then, chromic oxide is converted into crystal through calcination, and meanwhile sodium produces self dispersion on the oxide and reacts with the chromic oxide to generate sodium chromate and eliminate stronger acid sites of the chromic oxide. The conversion rate and selectivity of the catalyst are further improved. 本发明涉及种苯甲酸甲酯加氢制备苯甲醛的催化剂及其制备方法。催化剂以氧化锆为载体，以氧化锰为活性组分，以氧化铬