Method for preparing catalyst for methanol dehydrogenation to methyl formate through step coprecipitation-spray process

A technology of methyl formate and catalyst, applied in the field of catalyst preparation, can solve the problems of increased energy consumption of methyl formate production cost, low single-pass conversion rate of methyl formate selectivity, etc., and achieves improved spray drying effect and methyl formate selectivity. Improve and improve the effect of catalytic performance

Active Publication Date: 2012-10-31
HAO HUA CHENGDU TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current catalysts for methanol dehydrogenation to methyl formate generally use copper-based catalysts. Due to the characteristics of the preparation process of copper-based catalysts, the single-pass conversion rate of methanol and methyl formate selectivity of the catalyst are relatively low, and the single-pass conversion rate of methan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Weigh 5.20g of zinc nitrate and 13.12g of aluminum nitrate, dissolve them in a 50ml desalinated beaker, stir to dissolve them completely, add desalinated water and set the volume to 85ml, and prepare a one-step salt solution. Weigh 7.71g of sodium carbonate, dissolve it in a 50ml desalinated beaker, stir to dissolve it completely, add desalinated water and set the volume to 85ml, and prepare a one-step alkali solution. Weigh 197.22g of copper nitrate, 64.18g of zinc nitrate, and 30.62g of aluminum nitrate, dissolve them in a 200ml desalinated beaker, stir to dissolve completely, add desalinated water and set the volume to 1000ml, and prepare a two-step salt solution. Weigh 127.19g of sodium carbonate, dissolve it in a 200ml desalinated beaker, stir to dissolve it completely, add desalinated water and set the volume to 1000ml, and prepare a two-step alkali solution.

[0034] Preheat the one-step salt and one-step alkali to a reaction temperature of 65°C, and control the t...

Embodiment 2

[0051] Weigh 9.71g of zinc nitrate and 24.50g of aluminum nitrate, dissolve them in a beaker containing 80ml of desalinated water, stir to dissolve them completely, add desalinated water and set the volume to 160ml, and prepare a one-step salt solution. Weigh 15.07g of sodium carbonate, dissolve it in a beaker containing 80ml of desalinated water, stir to dissolve it completely, add desalinated water and set the volume to 160ml, and prepare a one-step alkali solution. Weigh 197.22g of copper nitrate, 184.57g of zinc nitrate, and 34.75g of aluminum nitrate, dissolve them in a 500ml desalinated beaker, stir to dissolve them completely, add desalinated water and set the volume to 1000ml, and prepare a two-step salt solution. Weigh 182.77g of sodium carbonate, dissolve it in a 500ml desalinated beaker, stir to dissolve it completely, add desalinated water and set the volume to 1500ml, and prepare a two-step alkali solution.

[0052] Preheat the one-step salt and one-step al...

Embodiment 3

[0069] Weigh 16.19g of zinc nitrate and 40.83g of aluminum nitrate, dissolve them in a 100ml desalinated beaker, stir to dissolve them completely, add desalinated water and set the volume to 250ml, and prepare a one-step salt solution. Weigh 26.27g of sodium carbonate, dissolve it in a 100ml desalinated beaker, stir to dissolve it completely, add desalinated water and set the volume to 250ml, and prepare a one-step alkali solution. Weigh 197.22g of copper nitrate, 105.24g of zinc nitrate, and 10.21g of aluminum nitrate, dissolve them in a 300ml desalinated beaker, stir to dissolve them completely, add desalinated water and set the volume to 1200ml, and prepare a two-step salt solution. Weigh 146.1g of sodium carbonate, dissolve it in a 300ml desalinated beaker, stir to dissolve it completely, add desalinated water and set the volume to 1200ml, and prepare a two-step alkali solution.

[0070] Preheat the one-step salt and one-step alkali to a reaction temperature of 70°C...

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PUM

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Abstract

The invention discloses a method for preparing catalyst for methanol dehydrogenation to methyl formate through a step coprecipitation-spray drying process. The method is that step coprecipitation is performed to copper, zinc and aluminum salt solution and alkaline solution, after the copper, zinc and aluminum salt solution and alkaline solution are pulped and filtered with hot desalted water, a qualified filter cake is obtained and is subjected to colloid mill processing, spray drying is performed to size, and dried catalyst precursor is roasted and formed so as to obtain the catalyst for methanol dehydrogenation. The catalyst prepared by the method has the characteristics of high catalytic activity and selectivity and strong stability.

Description

technical field [0001] The invention relates to a method for preparing a catalyst, in particular to a method for preparing a methyl formate catalyst by dehydrogenating copper-based methanol in the chemical industry, and belongs to the technical field of catalyst preparation. Background technique [0002] In the field of coal chemical industry and fine chemical industry, copper-based catalysts have been widely used in many solid-phase reactions of hydrogenation, dehydrogenation and reforming to produce hydrogen, such as methanol dehydrogenation to methyl formate, medium and low pressure synthesis gas to produce methanol, methanol water Hydrogen production by steam reforming, carbon monoxide low-temperature shift and other reactions. The main components of copper-based catalysts are generally CuO, ZnO and Al 2 o 3 , the traditional copper-based catalyst products are mainly synthesized by co-precipitation reaction of three metal components of Cu, Zn, Al and alkali. For examp...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J37/00C07C69/06C07C67/40
Inventor 胡志彪张晓阳胡高荣徐晓峰邹鑫刘京林李倩黄宏
Owner HAO HUA CHENGDU TECH
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