Catalyst for producing environment-friendly diesel additive and preparation method thereof

A catalyst and additive technology, applied in chemical instruments and methods, preparation of organic compounds, catalysts for physical/chemical processes, etc. problems such as loss, to achieve the effect of not easy to lose, avoid inhibition, and prevent the decline of reaction performance

Inactive Publication Date: 2020-09-29
闫英辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the defects of poor catalyst stability and difficult recycling, corrosiveness of the catalyst to the reaction equipment and low selectivity of polyoxymethylene dimethyl ether in the existing diesel additive technology, the invention discloses a method for producing environment-friendly diesel oil additives. Catalyst and preparation method thereof, the catalyst is based on WO 3 /ZrO 2 -Bi 2 o 3 The

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of zirconium bismuth composite oxide

[0030] Mix the zirconium oxynitrate solution and bismuth nitrate solution and continue to stir for 25 minutes, then add urea and PVA to it and continue to stir for 35 minutes, then react at 80°C for 24h, centrifuge, wash and dry the obtained product, and then roast it at 550°C for 7 h, obtain the zirconium-bismuth composite oxide; the ratio of the amount of zirconium-bismuth substance is 1:2, the addition of described urea is 20 times of the sum of the amount of zirconium oxynitrate and bismuth nitrate substance, the addition amount of PVA is nitric acid 2 wt%% of the total weight of zirconium oxide and bismuth nitrate; the molar concentration of the zirconyl nitrate substance is 0.10mol / L, and the molar concentration of the bismuth nitrate substance is 0.3mol / L;

[0031] (2) Preparation of solid super acid:

[0032] First, the zirconium-bismuth composite oxide was ultrasonically dispersed into deionized water, the...

Embodiment 2

[0040] (1) Preparation of zirconium bismuth composite oxide

[0041] Mix the zirconium oxynitrate solution and bismuth nitrate solution and continue to stir for 35 minutes, then add urea and PVA to it and continue to stir for 25 minutes, then react at 90°C for 12 hours, centrifuge, wash and dry the obtained product, and then roast at 750°C for 5 hours , obtain zirconium-bismuth composite oxide; the ratio of the amount of zirconium-bismuth substance is 3:1, and the add-on of described urea is 20 times of the sum of the amount of zirconium oxynitrate and bismuth nitrate substance, and the add-on of PVA is oxynitrate 5 wt% of the total weight of zirconium and bismuth nitrate; the molar concentration of the zirconyl oxynitrate substance is 0.3mol / L, and the molar concentration of the bismuth nitrate substance is 0.15mol / L;

[0042] (2) Preparation of solid super acid:

[0043] First, the zirconium-bismuth composite oxide was ultrasonically dispersed into deionized water, then amm...

Embodiment 3

[0051] (1) Preparation of zirconium bismuth composite oxide

[0052] Mix the zirconium oxynitrate solution and the bismuth nitrate solution and continue to stir for 30 minutes, then add urea and PVA to it and continue to stir for 30 minutes, then react at 85°C for 18 hours, centrifuge, wash and dry the obtained product, and then roast it at 650°C for 6 h, obtain the zirconium-bismuth composite oxide; the ratio of the amount of zirconium-bismuth substance is 1:1, the addition of described urea is 15 times of the sum of the amount of zirconyl nitrate and bismuth nitrate substance, the addition of PVA is nitric acid 3 wt% of the total weight of zirconium oxynitrate and bismuth nitrate; the molar concentration of the zirconyl nitrate solution substance is 0.1mol / L, and the molar concentration of the bismuth nitrate solution substance is 0.1mol / L;

[0053] (2) Preparation of solid super acid:

[0054] First, the zirconium-bismuth composite oxide was ultrasonically dispersed into d...

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PUM

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Abstract

The invention discloses a catalyst for producing an environment-friendly diesel additive and a preparation method of the catalyst. The catalyst prepared by in-situ compounding of WO3/ZrO2-Bi2O3 solidsuperacid and zirconium-based solid ionic liquid is prepared through the steps of preparation of a zirconium-bismuth composite oxide, preparation of the solid superacid, preparation of an ionic liquidprecursor MIMPS and in-situ loading of the zirconium-based solid ionic liquid, wherein the mass fraction of the WO3/ZrO2-Bi2O3 solid superacid in the catalyst is 70 to 90wt%. According to the invention, the problems of difficult separation of the catalyst and a product and poor stability caused by easy loss of reactive components can be solved; the catalyst can be kept in a solid state, and the acid content and the acid strength of the catalyst are relatively moderate, so the catalyst has no corrosivity to a reactor; and the catalyst has high catalytic efficiency and is good in selectivity ofthe obtained main product.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and relates to a diesel additive technology, in particular to a catalyst used in the production of an environment-friendly diesel additive and a catalyst preparation method thereof. Background technique [0002] With the wide application of diesel oil, the demand for diesel oil in the international community is increasing year by year, and the problem of the emission of harmful substances is also becoming more and more serious, seriously affecting the sustainable development of human society. Therefore, effectively improving the combustion efficiency of diesel oil and reducing the emission of harmful substances has become a problem that people urgently need to solve. [0003] In order to meet the social needs of developing high-efficiency and clean diesel, researchers from various countries have intensified their research on diesel additives. Under the premise of maintaining the n...

Claims

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Application Information

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IPC IPC(8): B01J31/02B01J27/188C07C41/56C07C43/30
CPCB01J27/188B01J31/0279B01J31/0285B01J31/0294B01J31/0298C07C41/56C07C43/30
Inventor 闫英辉
Owner 闫英辉
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