Catalyst for preparing 3-pentanol by hydrogenation of 3-pentanone and preparation method thereof

Abstract

The invention discloses a catalyst for preparing 3-pentanol through 3-pentanone hydrogenation. The catalyst comprises a carbon-based carrier and a multi-metal component recorded as M1-M2-M3 / C, wherein M1 is selected from one of Ru, Mn and Ag; M2 is selected from one of Ir, Au and Cu; and M3 is selected from one of La, Ce and Y. The catalyst is applied to the liquid phase 3-pentanone hydrogenation process. The conversion rate of 3-pentanone can be 100 percent within a short time, and the selectivity of the 3-pentanol is 100 percent. The invention also provides a method for preparing the catalyst, and the industrial preparation is easily realized.

Description

technical field [0001] The invention relates to a catalyst, in particular to a catalyst for preparing 3-pentanol by hydrogenating 3-pentanone and a preparation method thereof. Background technique [0002] 3-Pentanol is an important chemical raw material. In addition to being used in organic synthesis, it is also used as a flotation agent and solvent. It belongs to a pharmaceutical intermediate, a material intermediate, and a fine chemical. 3-pentanol can be produced by hydrogenation of 3-pentanone, and there are no patents related to catalytic technology. There have been patent documents reporting catalysts and processes for hydrogenation of ketones to alcohols. Patents CN1152744C, CN1114490C and CN1347758A report the method for preparing 2-octyl alcohol by hydrogenation of 2-octanone, using its self-made catalyst system (copper-containing catalyst, nickel-containing catalyst), using a fixed-bed liquid-phase hydrogenation process to achieve, the reaction temperature 100-25...

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Problems solved by technology

3-Pentanol can be produced by hydrogenation of 3-Pentanone, and there are no patents related to catalytic technology. There have been patent documents reporting catalysts and processes for hydrogenation of ketones to alcohols

Japanese patent Ping-41038, Soviet patent SU1118632A introduced acetone hydrogenation method using Cu-Cr catalyst, Russian patent RU2047590 used catalysts containing NiO, CuO and other components, but the conversion rate of these catalysts was not high and the selectivity was poor , the use of Cr2O3 as an additive will cause environmental pollution at the same time, which does not meet the requirements of green chemical industry

CN103030525A has reported a kind of method that acetone liquid phase hydrogenation prepares isopropanol, but reaction temperature is higher, at 100~200 ℃, reaction time is longer (4 hours), and the conversion rate of acetone is more than 96%, and isopropanol The selectivity is greater than 95%

The temperature of ketone hydrogenation reported in the patent is relatively high, or the reaction time is long, or the operating conditions of pressure have high requirements on the equipment, or the conversion rate and product selectivity cannot reach high standards at the same time, if a Highly active and highly selective catalysts for short-term low-temperature reactions will greatly reduce the cost of the production process and reduce the burden on the later stage of separation. The overall low energy consumption and high-efficiency production meet the requirements of green chemical industry