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A titanium-silicon phosphotungstate composite material with mesoporous structure and preparation method thereof

A technology of silicon composite materials and titanium phosphotungstate, applied in the field of composite materials, can solve the problems of long experimental period and complicated operation process, and achieve the effect of short experimental period, simple operation and improved hydrophobic performance

Active Publication Date: 2022-02-01
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the post-grafting method or dipping method is mostly used, and the operation process is complicated and the experiment period is long.

Method used

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  • A titanium-silicon phosphotungstate composite material with mesoporous structure and preparation method thereof
  • A titanium-silicon phosphotungstate composite material with mesoporous structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of a titanium-silicon phosphotungstate composite material with a mesoporous structure, comprising the following steps:

[0025] (1) Weigh 1.0 g of P123, dissolve it in 30 mL of dilute hydrochloric acid with a concentration of 2 mol / L, and stir magnetically at 40 °C until P123 is completely dissolved to obtain a clear solution containing the structure-directing agent;

[0026] (2) Weigh 0.6 g H 3 PW 12 o 40 , and then dissolved it in 7.5 mL distilled water, and added the dissolved phosphotungstic acid aqueous solution dropwise to the clear solution prepared in step (1), and stirred thoroughly for 2 hours to obtain a milky white solution;

[0027] (3) Weigh 0.43 g of titanium trichloride hydrochloric acid solution with a mass fraction of 17%, and add it to the milky white solution prepared in step (2), and then add 1.32 mL of 98% normal Ethyl silicate, and then add dropwise 1,2-bis(triethoxysilyl)ethane with a mass fraction of 97%, said ethyl ortho...

Embodiment 2

[0031] A preparation method of a titanium-silicon phosphotungstate composite material with a mesoporous structure, comprising the following steps:

[0032] (1) Weigh 1.0 g of P123, dissolve it in 30 mL of dilute hydrochloric acid with a concentration of 2 mol / L, and stir magnetically at 40 °C until P123 is completely dissolved to obtain a clear solution containing the structure-directing agent;

[0033] (2) Weigh 0.4 g H 3 PW 12 o 40 , and then dissolved it in 5 mL of distilled water, and added the dissolved aqueous solution of phosphotungstic acid dropwise to the clear solution prepared in step (1), and stirred thoroughly for 2 hours to obtain a milky white solution;

[0034] (3) Weigh 0.43 g of titanium trichloride hydrochloric acid solution with a mass fraction of 17%, and add it to the milky white solution prepared in step (2), and then add 1.32 mL of 98% normal Ethyl silicate, and then 0.61 mL of 1,2-bis(triethoxysilyl)ethane with a mass fraction of 97% was added dropw...

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Abstract

The invention discloses a titanium-silicon phosphotungstate composite material with a mesoporous structure and a preparation method thereof, belonging to the technical field of composite materials. The composite material structure of the invention is H 3 PW 12 o 40 ‑Ti‑PMO, wherein the composite has the structure H 3 PW 12 o 40 ‑Ti‑PMO, the composite material is a mesoporous silicon-based composite material PMO as a carrier, and the carrier is loaded with two active components of phosphotungstic acid and titanium, and the mesoporous silicon-based hybrid material PMO is composed of organic silicon source and inorganic silicon source, the loading of phosphotungstic acid is 12.56%-17.77%, and the loading of titanium is 0.215%-0.315%. H of the present invention 3 PW 12 o 40 The preparation process of ‑Ti‑PMO composite material is simple, and it is used to catalyze the esterification reaction of oleic acid with high conversion rate, high product purity and clean and pollution-free reaction process.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a titanium-silicon phosphotungstate composite material with a mesoporous structure and a preparation method thereof. Background technique [0002] Biodiesel is a non-toxic, renewable, biodegradable and non-petroleum biofuel, which is a promising substitute for depleting fossil diesel resources and has attracted extensive attention in recent years. It is usually obtained by the esterification of free fatty acids (FFA) and short-chain alcohols under the action of an acid catalyst. However, traditional acid catalysts such as hydrochloric acid, sulfuric acid and other liquid acids have serious corrosion effects on production equipment when used in acid-catalyzed reactions, greatly increasing equipment maintenance costs, and homogeneous catalysts are not easy to separate and difficult to reuse, resulting in serious Energy waste and environmental pollution are urgent probl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/10B01J35/10B01J37/03B01J37/08B01J31/12B01J31/18C07C67/08C07C69/24
CPCB01J37/10B01J37/031B01J37/0018B01J31/12B01J27/188C07C67/08B01J35/61B01J35/647C07C69/24
Inventor 胡江磊王瑶瑶张林龙李帅
Owner CHANGCHUN UNIV OF TECH
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