Preparation method of catalyst for preparing 2-methyltetrahydrofuran from 2-methylfuran through gas phase hydrogenation

A technology of methyl tetrahydrofuran catalyst and methyl furan, applied in the direction of metal/metal oxide/metal hydroxide catalyst, chemical instrument and method, physical/chemical process catalyst, etc., can solve the problem of increasing production cost, low reaction pressure, Environmental pollution and other problems, to achieve good stability, high selectivity, good repeatability

Active Publication Date: 2014-08-13
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This invention relates to an improved process that uses specific types of chemicals called catalysis or redox processes instead of traditional methods like distillations or separation techniques. It achieves this improvement through simplified procedures and increased efficiency compared to existing technologies.

Problems solved by technology

The technical problem addressed in this patented text relates to developing new chemical agents called 2-METETHYLFO instead of existing ones such as THFDHE and TOPSCH. These chemistries require specialized apparatus and techniques like heat treatment and distillations due to their volatilization properties during use. Previous researchers had focused primarily towards improving these processes while exploring other ways to improve efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Dissolve 34.02 grams of nickel nitrate 6 water in 234 ml of deionized water, add the solution dropwise to 105 grams of 25% silica sol at room temperature, wait for 2 hours after gelation, and then stir and evaporate the solvent at 80°C , dried at 100°C for 12 hours to obtain a xerogel, ground and extruded, and then calcined at 600°C for 4 hours in a muffle furnace to obtain a catalyst.

Embodiment 2

[0021] Example 2 Dissolve 40.7 grams of nickel nitrate 6 water in 280 ml of deionized water, add the solution dropwise to 98 grams of 25% silica sol at room temperature, age for 2 hours after gelation, then stir and evaporate the solvent at 80°C , dried at 100°C for 12 hours to obtain a xerogel, ground and extruded, and then calcined at 600°C for 4 hours in a muffle furnace to obtain a catalyst.

Embodiment 3

[0022] Example 3 Dissolve 34.02 grams of nickel nitrate 6 water and 2.95 grams of calcium nitrate 4 water in 259 ml of deionized water, add the solution dropwise to 102.2 grams of 25% silica sol at room temperature, and age for 2 hours after gelation, and then in The solvent was evaporated by stirring at 80°C, dried at 100°C for 12 hours to obtain a xerogel, ground and extruded, and then calcined in a muffle furnace at 600°C for 4 hours to obtain a catalyst.

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PUM

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Abstract

The invention discloses a catalyst for preparing 2-methyltetrahydrofuran from 2-methylfuran through gas phase hydrogenation and a preparation method of the catalyst. The preparation method comprises the following steps: dissolving soluble Ni salt or Ni salt and alkali metal/alkaline-earth metal in a water solution; then dropwise adding into silica sol, and stirring and evaporating a solvent; after the solvent is evaporated, further drying, forming and roasting in a drying oven to finally prepare a NiO/SiO2 catalyst, wherein the mass percentage of NiO is 20-40, the mass percentage of carrier SiO2 is 60-80, and the mass percentage of alkali metal or alkaline-earth metal oxide aids is 2-10. Non-precious metal nickel is adopted, the reaction temperature is not high, and the pressure is low, so that the cost is reduced, resources are saved, main products also contain 2-amyl alcohol besides the 2-methyltetrahydrofuran, the number of other byproducts is extremely small, and the catalyst is high in stability.

Description

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Claims

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Application Information

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Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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