Catalyst and application of catalyst in technology for preparing 1,5-pentanediol through hydrogenolysis of tetrahydrofurfuryl alcohol

Abstract

The invention relates to a catalyst and an application of the catalyst in a technology for preparing 1,5-pentanediol through hydrogenolysis of tetrahydrofurfuryl alcohol. The catalyst comprises an active component and an assistant, wherein the active component is one out of raney Ni, raney Co, raney Cu, and the assistant is one out of MoO3, MoOx / SiO2, ReOx / SiO2, WO3, SnO2 and MnO2. A synthesis technology of the catalyst is simple, a noble metal Rh or Ir catalyst is replaced by a non-noble metal raney catalyst, the cost of the catalyst is greatly lowered, the catalysis effect is excellent, the reaction of preparing 1,5-pentanediol with the catalyst adopts one-step hydrogenation, the flow is simple, and the reaction route is a sustainable development route.

Description

technical field [0001] The invention belongs to the field of catalyst synthesis, in particular to a catalyst comprising one selected from Raney nickel (Raney Ni), Raney cobalt (Raney Co) and Raney copper (Raney Cu) as an active component, and a catalyst selected from MoO 3 、MoO x / SiO 2 、ReO x / SiO 2 、WO 3 , SnO 2 and MnO 2 One of them is a catalyst as an auxiliary agent, and the application of the catalyst in the process of preparing 1,5-pentanediol by hydrogenolysis of tetrahydrofurfuryl alcohol. Background technique [0002] 1,5-pentanediol is a chemical intermediate widely used in the manufacture of polyurethanes, polyesters, plasticizers, inks, coatings and spices. Currently, only American BASF and GFS Chemicals, Japan UBE Co., Ltd. , PetroChina Liaoyang Petrochemical Company has its preparation technology, and the domestic market basically relies on imports. [0003] The preparation process of 1,5-pentanediol has been reported as early as the 1930s. Using furfu...

AI Technical Summary

Problems solved by technology

Although the process route has been greatly improved, the raw material 1,5-glutaric acid dimethyl ester is separated from the mixed acid of adipic acid and by-product glutaric acid through esterification, and the source is short and expensive. As a result, the process route does not have good development prospects

[0008] In recent years, the research group of Lu Guanzhong of East China University of Science and Technology has successfully developed a process route for preparing 1,5-pentanediol and 1,2-pentanediol by hydrogenation under mild conditions using furfural as raw material (Chem.Comm., 2011, 47,3924-396 and CN102134180A), but the total yield is low and the by-products are complicated

In addition, the Japanese Tomishige research group reported for the first time that tetrahydrofurfuryl alcohol was used as raw material to prepare 1,5-pentanediol by one-step hydrogenolysis, in which the conversion rate can reach more than 90%, and the selectivity of 1,5-pentanediol is as high as 90%. (Chem.Comm., 2009, 2035-2037, Journal of catalysis, 2009, 267, 89~92, Journal of catalysis, 2012, 294, 171~183), compared with the above-mentioned other process routes, the process is simple and cheap , the conversion rate of raw materials and the selectivity of the target product are high. The disadvantage is that the catalyst used in this process route is a noble metal Rh or Ir catalyst, which is expensive and the production cost is too high. If non-noble metals can be developed to replace noble metals, the cost of catalysts can be further reduced. Then the process route will have a good industrial application prospect

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