Catalyst for synthesizing crotyl alcohol by carrying out selective hydrogenation on crotonaldehyde, and preparation method of catalyst

• Main Authors: PAN TAO, HONG QINGHONG, CHEN LING
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2014
• 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 synthesizing crotyl alcohol by carrying out selective hydrogenation on crotonaldehyde, and a preparation method of the catalyst. SiO2 with the particle size of 2-3mm is taken as a carrier; a first loading layer is Fe-xZn-yLa, wherein x and y refer to the molar ratios of Zn to Fe and La to Fe respectively, and x=0-5, y=0-5; in the Fe-xZn-yLa/ SiO2 carrier, the total mass percent of Fe-Zn-La is 0.05-2.0% of the mass percent of SiO2; Ir-Pt is used as a second loading layer, wherein the mass percent of Ir is 1.0-5.0% of that of SiO2, and the molar ratio of Pt to Ir is 0.03-0.2. The preparation method comprises the steps of firstly, dipping the carrier into a mixed water solution of Fe(NO3)3, Zn(NO3)2 and La(NO3)3; drying by distillation in water bath, calcinating, and reducing to obtain the first loading layer; after that, dipping the first loading layer into a mixed methylbenzene solution of Ir(acac)3 and Pt(acac)2; and drying by distillation in water bath, calcinating, an