Solid acid catalyst and use thereof

A solid acid catalyst and reaction technology, applied in physical/chemical process catalysts, fatty acid esterification, liquid carbon-containing fuels, etc., can solve problems such as harsh reaction conditions, achieve improved conversion rate, less dosage, and high catalytic efficiency Effect

Active Publication Date: 2013-03-20
马鞍山市安工大智能装备技术研究院有限公司
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AI Technical Summary

Benefits of technology

This new type of catalyst helps make it easier than previous methods like chemical reactions that were more efficient but also causes environmental concerns such as waste water or harmful substances during production process.

Problems solved by technology

This patents discusses various ways to make fuel alternatives that can reduce emissions associated with fossil fuel combustions while maintaining their benefits over traditional ones like gasoline. However, current techniques involve expensive processes involving heteroatom compounds derived from crucial feedstock sources. These new technologies aim towards producing biofucls without harmful substituants and avoiding complex separating steps during synthesis procedures.

Method used

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  • Solid acid catalyst and use thereof
  • Solid acid catalyst and use thereof

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Experimental program
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Embodiment 1

[0023] The concrete preparation steps of 1# zirconium sulfate are as follows:

[0024] (1) Preparation of zirconium hydroxide powder:

[0025] 5 g zirconium oxychloride octahydrate (ZrOCl 2 ·8H 2 O) Dissolve in 100 mL of water, stir at room temperature, after the solution is clarified, add 25% ammonia water, adjust the pH value of the solution to 8, obtain a white precipitate of zirconium hydroxide, filter, wash with water until the filtrate does not contain chloride ions, Dry at 80 °C for 24 hours and grind into powder for later use.

[0026] (2) Preparation of zirconium sulfate raw powder:

[0027] Dissolve 2 g of polyvinylpyrrolidone (PVP) in 40 mL of ethylene glycol and stir at 60 °C. After the solution is clarified, add 0.5 g of the ground zirconium hydroxide powder, stir for 2 h, and add 0.2 M H 2 SO 4 The solution was 3 mL, stirred for 12 h, transferred to a polymerization kettle, put into an oven, and the temperature of the oven was set at 180 °C. After 12 hours, ...

Embodiment 2

[0031] The concrete preparation steps of 2# zirconium sulfate are as follows:

[0032] (1) Preparation of zirconium hydroxide powder:

[0033] With the preparation method of zirconium hydroxide powder among the embodiment 1.

[0034] (2) Preparation of zirconium sulfate raw powder:

[0035] Dissolve 2 g of polyvinylpyrrolidone (PVP) in 40 mL of ethylene glycol and stir at 60 °C. After the solution is clarified, add 1 g of the ground zirconium hydroxide powder, stir for 2 h, and add 0.2 M H 2 SO 4 The solution was 3 mL, stirred for 12 h, transferred to a polymerization kettle, put into an oven, and the temperature of the oven was set at 180 °C. After 12 hours, it was cooled to room temperature, filtered, washed and dried to obtain nano zirconium sulfate raw powder.

[0036] (3) Treatment of raw zirconium sulfate powder:

[0037] Nano zirconium sulfate raw powder was roasted in a muffle furnace with a heating rate of 1 °C / min and a constant temperature of 650 °C for 5 h to ...

Embodiment 3

[0039] The concrete preparation steps of 3# zirconium sulfate are as follows:

[0040] (1) Preparation of zirconium hydroxide powder:

[0041] With the preparation method of zirconium hydroxide powder among the embodiment 1.

[0042] (2) Preparation of zirconium sulfate raw powder:

[0043]Dissolve 2 g of polyvinylpyrrolidone (PVP) in 40 mL of ethylene glycol and stir at 60 °C. After the solution is clarified, add 2 g of the ground zirconium hydroxide powder, stir for 2 h, and add 0.2 M H 2 SO 4 The solution was 3 mL, stirred for 12 h, transferred to a polymerization kettle, put into an oven, and the temperature of the oven was set at 180 °C. After 12 hours, it was cooled to room temperature, filtered, washed and dried to obtain nano zirconium sulfate raw powder.

[0044] (3) Treatment of raw zirconium sulfate powder:

[0045] The zirconium sulfate raw powder was roasted in a muffle furnace with a heating rate of 1 °C / min and a constant temperature of 650 °C for 5 h to ob...

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Abstract

The invention discloses a solid acid catalyst, belonging to the field of chemical catalysts. The solid acid catalyst consists of activated components of zirconium sulfate nano particles, the nano particles are good in dispersity and are in spherical, ellipsoidal or pear-shaped structures, and the particle size ranges from 30nm to 900nm. The zirconium sulfate nano particles prepared by the invention can be directly used as a catalyst for catalyzing an esterification reaction in which biodiesel is synthesized by using free fatty acid. The optimal reaction process of the esterification reaction is as follows: the mole ratio of the free fatty acid to lower alcohol is 1:40, the mass ratio of the solid acid catalyst to the free fatty acid is 0.2, and the reaction temperature is 95 DEG C. When the catalyst provided by the invention is used in the esterification reaction in which biodiesel is synthesized by using the free fatty acid, the conversion rate of the fatty acid is increased, the catalyst and a product can be easily separated, and the solid acid catalyst has the advantages of non-corrosiveness, environment pollution freeness, high catalysis efficiency, less use amount, less byproduct and the like.

Description

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Claims

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Application Information

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Owner 马鞍山市安工大智能装备技术研究院有限公司
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