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

A production-environment-friendly technology, applied in chemical instruments and methods, preparation of organic compounds, catalysts for physical/chemical processes, etc., can solve the difficulties in separation of catalysts and products, low selectivity of polyoxymethylene dimethyl ether, reactive group Problems such as easy loss, to achieve the effect of not easy to lose, prevent excessive aggregation, and avoid inhibition

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 reaction equipment and low selectivity of polyoxymethylene dimethyl ether in the existing diesel additive technology, the invention discloses a method for producing environmentally friendly diesel oil. Catalyst and preparation method of additive, with MoO 3 / ZrO 2 -SnO 2 Composite catalyst combining solid superacid and tin-based solid ionic liquid
The composite catalyst can not only solve the problem of difficulty in separating the catalyst from the product, and the easy loss of reactive components leading to poor stability, but also has no corrosion to the reactor because the catalyst can maintain a solid state and its own acid content and acid strength are relatively moderate, High catalytic efficiency and good selectivity of the main product obtained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of a catalyst for producing an environmentally friendly diesel fuel additive is achieved through the following specific steps:

[0030] (1) Preparation of zirconium-tin composite oxide

[0031] The 0.1 mol / L zirconium oxynitrate solution and the 0.4 mol / L tin tetrachloride solution were mixed uniformly, and then stirred for 25 minutes, then urea and PVA were added to the solution and stirred for 25 minutes, and then reacted at 80 °C for 24 hours. After centrifugation, washing and drying, calcination at 500 °C for 6 hours to obtain a zirconium-tin composite oxide; the ratio of the amount of zirconium to tin is 1:4, and the amount of urea added is zirconium oxynitrate and tin tetrachloride. 10 times of the sum of the amount, the addition of PVA is 3.0 wt% of the total weight of zirconium oxynitrate and tin tetrachloride;

[0032] (2) Preparation of solid super acid:

[0033] First ultrasonically disperse the zirconium tin composite oxide into deioni...

Embodiment 2

[0041] A preparation method of a catalyst for producing an environmentally friendly diesel fuel additive is achieved through the following specific steps:

[0042] (1) Preparation of zirconium-tin composite oxide

[0043] The 0.4 mol / L zirconium oxynitrate solution and the 0.1 mol / L tin tetrachloride solution were mixed uniformly, and then stirred for 35 minutes, then urea and PVA were added to the solution and stirred for 35 minutes, and then reacted at 90 °C for 12 hours. After centrifugation, washing and drying, calcination at 600 °C for 5 hours to obtain zirconium-tin composite oxide; the ratio of zirconium-tin substances is 4:1, and the added amount of urea is zirconium oxynitrate and tin tetrachloride substances 20 times of the sum of the amount, the addition of PVA is 6.0 wt% of the total weight of zirconium oxynitrate and tin tetrachloride;

[0044] (2) Preparation of solid super acid:

[0045] First ultrasonically disperse the zirconium tin composite oxide into deio...

Embodiment 3

[0053] A preparation method of a catalyst for producing an environmentally friendly diesel fuel additive is achieved through the following specific steps:

[0054] (1) Preparation of zirconium-tin composite oxide

[0055] Mix the 0.2 mol / L zirconium oxynitrate solution and the 0.2 mol / L tin tetrachloride solution, and continue to stir for 30 minutes, then add urea and PVA to it and continue to stir for 30 minutes, and then react at 85 ° C for 18 hours. After centrifugation, washing and drying, calcining at 550 °C for 5.5 hours to obtain a zirconium-tin composite oxide; the ratio of the amount of zirconium and tin is 1:1, and the amount of urea added is zirconium oxynitrate and tin tetrachloride 15 times of the sum of the amount of substances, the addition of PVA is 4.5 wt% of the total weight of zirconium oxynitrate and tin tetrachloride;

[0056] (2) Preparation of solid super acid:

[0057] First ultrasonically disperse the zirconium-tin composite oxide into deionized wate...

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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 is obtained through preparation of a zirconium-tin composite oxide, preparation of MoO<3> / ZrO<2>-SnO<2> solid superacid, preparation of an ionic liquid precursor PYPS and in-situ loading of tin-based solid ionic liquid, wherein the mass fraction of the MoO<3> / ZrO<2>-SnO<2> solid superacid in the catalyst is 75-85 wt%, and the tin-based solid ionic liquid is one selected from a group consisting of Sn[PYPS]<2>SiMo<12>O<40>, Sn<0.5>[PYPS]<3>SiMo<12>O<40>and Sn<1.5>[PYPS]SiMo<12>O<40>. The catalyst provided by the invention can solve the problems of difficult separation of the catalyst from a product and poor stability caused by easy loss of reactivecomponents, can maintain a solid state, has relatively moderate acid content and acid strength, does not corrode a reactor, and has high catalytic efficiency and good main product selectivity.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and relates to a technology of diesel fuel additive, in particular to a catalyst for producing environment-friendly diesel fuel additive and a preparation method. 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 subsequent emission of harmful substances is also becoming more and more serious, which seriously affects the sustainable development of human society. Therefore, effectively improving the combustion efficiency of diesel and reducing the emission of harmful substances has become an urgent problem to be solved. [0003] In order to meet the social needs of developing high-efficiency and clean diesel, researchers from all over the world have intensified their research on diesel additives. Under the premise of maintaining the normal operation of the engine, diese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J31/16C07C43/30C07C41/56C10L1/12
CPCB01J27/19B01J31/0294C07C41/56C10L1/1233C07C43/303
Inventor 闫英辉
Owner 闫英辉
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