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Production method of solid superacid catalyst so42-/sb-sno2

A solid super acid, production method technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of no catalyst, and achieve the effect of reducing production investment and management costs

Inactive Publication Date: 2011-12-28
QIANXINAN HENGLI NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is no other solid superacid SO 4 2- / SnO 2 There are no technical reports on catalysts, and no catalysts for the pre-esterification and deacidification of rice bran oil with high acid value have been published.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Adopt the following steps to prepare solid superacid catalyst SO4 2- / Sb-SnO 2 :

[0023] First prepare the Fe 3 o 4 Magnetic Nanoparticles: Accurately Weighing Fe 2 (SO 4 ) 3 and FeSO 4 ·7H 2 O, prepare 0.1mol / L Fe with deionized water 3+ and Fe 2+ aqueous solution, under nitrogen protection conditions, and in n ( Fe 3 + ) ? n ( Fe 2 +) = 2 ? 1, pH=8~10, stirred in a water bath at 50°C for 50 min, then heated and matured at 65°C for 2 h to obtain magnetic Fe 3 o 4 Nanoparticles, spare;

[0024] Then prepare Sb-SnO 2 Colloid: Accurately weigh SnCl 4 ·5H 2 O solid 202.28g, quickly dissolved in absolute ethanol, dilute to 1000mL, make a solution with a concentration of 2.023g / 10mL, airtight for use; accurately weigh SbCl 3 Solid 14.9986g, quickly dissolved in absolute ethanol, dilute to 250mL, make a solution with a concentration of 0.059994g / mL, airtight for use; take 200mL of SnCl with a concentration of 2.023g / 10mL 4 ·5H 2 O standard solution, and t...

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Abstract

The invention discloses a production method of a solid super acidic catalyst S04<2-> / Sb-SnO2, which comprises the following steps: (1) preparing Fe3O4 magnetic nanoparticles; (2) preparing an Sb-SnO2 colloid; (3) preparing Fe3O4 / Sb-SnO2 covering powder; and (4) preparing a magnetic solid super acidic catalyst S04<2-> / Sb-SnO2. In the invention, antimony doped tin oxide is used for preparing the magnetic solid super acidic catalyst S04<2-> / Sb-SnO2, a Hammett tracer method is used for carrying out acid strength characterization on solid super acid, the acid strength H0 is less than -13.8, and issuper acid. The magnetic super solid acidic catalyst S04<2-> / Sb-SnO2 disclosed by the invention can be applied in high-acid-value rice bran oil pre-esterification deacidification, so that the original reaction temperature can be reduced to 70 DEG C from more than 200 DEG C before non-strong super acidification, the esterification efficiency can reach over 90%, and the production investment and the management cost can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to solid superacid catalyst SO 4 2- / Sb-SnO 2 The production method and the solid catalyst. Background technique [0002] As we all know, solid acid overcomes the shortcomings of liquid acid, and has the characteristics of easy separation from liquid phase reaction system, no corrosion of equipment, simple post-treatment, little pollution to the environment, high selectivity, etc., and can make related reactions at normal pressure and lower It can be carried out smoothly at low temperature, so it has received extensive attention in petrochemical and organic synthesis, and its research and application have progressed very rapidly. In recent years, there have been more than 80 patent applications related to solid superacids, which is enough to show that the research on superacids has received extensive attention. [0003] In recent years, on the solid superacid SO 4 2- / SnO 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J37/02C11B3/02
Inventor 张学俊李搏
Owner QIANXINAN HENGLI NEW ENERGY TECH
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