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A kind of ce-vpo/sba-15 catalyst and its preparation method and application

A catalyst and application technology, applied in the field of organic catalysis, can solve problems such as high investment and complex process, and achieve good catalytic activity and stability

Inactive Publication Date: 2019-12-31
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex process and high investment, this method was difficult to be accepted by the industry.

Method used

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  • A kind of ce-vpo/sba-15 catalyst and its preparation method and application
  • A kind of ce-vpo/sba-15 catalyst and its preparation method and application
  • A kind of ce-vpo/sba-15 catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of Ce-VPO / SBA-15 Catalyst

[0022] Weigh NH 4 VO 3 0.8489g and H 2 C 2 o 4 2H 2 O 1.8287g in beaker A, then add deionized water to the beaker under the conditions of 50°C water bath heating and magnetic stirring to dissolve, stir the solution until it turns green; according to the catalyst P / V / Ce=1.8 / 1 / 0.2 Ratio composition requirements, weigh 1.5060g of phosphoric acid in beaker B, then weigh 0.7957g of cerium ammonium nitrate in beaker C and heat to dissolve to form a clear solution for use. The liquids in the two beakers (A, B) were added to SBA-15 in sequence at the same time, and each beaker was fully washed with 20-40ml of water. After the solution was completely added to the carrier, stir evenly, and pour the prepared ammonium cerium nitrate solution into In the carrier, stir once every half an hour during 6 hours of immersion. After immersion, the sample is dried overnight in a drying oven at 120°C. After drying, it is roasted at 500°C. The s...

Embodiment 2

[0028] Same as Example 1, but the ratio of P / V / Ce in the catalyst was changed so that the P / V / Ce molar ratio was 1.8 / 1 / 0.1, and the obtained results are shown in Table 2.

[0029] Table 2. Ce-VPO / SBA-15 (P / V / Ce=1.8 / 1 / 0.1) catalyzed methyl acetate formaldehyde to prepare methyl acrylate result table

[0030]

Embodiment 3

[0032] Same as Example 1, but the ratio of P / V / Ce in the catalyst was changed so that the P / V / Ce molar ratio was 1.8 / 1 / 0, and the obtained results are shown in Table 3.

[0033] Table 3. Ce-VPO / SBA-15 (P / V / Ce=1.8 / 1 / 0) catalyzed methyl acetate formaldehyde to prepare methyl acrylate result table

[0034]

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Abstract

The invention provides a Ce-VPO / SBA-15 catalyst, as well as a preparation method and application thereof. The preparation method comprises the following preparation steps: weighing NH4VO3 and H2C2O4.2H2O into a beaker A, adding deionized water into the beaker to dissolve under the conditions of heating in a water bath of 50 DEG C and magnetically stirring; putting phosphoric acid into a beaker B, weighing certain amount of ceric ammonium nitrate into a beaker C to dissolve, preparing a solution for later use; adding SBA-15 into the solutions of the beaker A and the beaker B, sufficiently washing the beaker A and the beaker B with water, stirring evenly after a carrier is fully added, pouring into the ceric ammonium nitrate solution in the beaker C, fully stirring, stirring once every half hour while dipping for 6 hours, drying a dipped sample in a drying oven, roasting after finishing drying, tableting the sample, screening into a particle of 20-40 meshes, preparing the catalyst, and marking the catalyst as the Ce-VPO / SBA-15 catalyst. The distinguishing characteristic of the Ce-VPO / SBA-15 catalyst and the preparation method is that the adopted Ce-VPO / SBA-15 catalyst is excellent in catalytic activity and stability in the reaction process.

Description

technical field [0001] The invention relates to a Ce-VPO / SBA-15 catalyst, a preparation method thereof and the use of catalyzing the condensation of methyl acetate and paraformaldehyde to prepare methyl acrylate, belonging to the field of organic catalysis. Background technique [0002] Methyl acrylate is a fine chemical raw material widely used in modern chemical industry, and is mainly used as an organic synthesis intermediate and polymer monomer. Because the polymer produced by methyl acrylate has good elasticity and viscosity, is stable to light and is not easy to weather, it is widely used in coatings, adhesives, pulp treatment, glazing agents, leather, chemical fibers, detergents, oil exploration and Superabsorbent materials and other fields. Since 2010, the domestic demand for methyl acrylate has been increasing at a rate of 10% to 15% every year, and the market application prospect is good. [0003] At present, the preparation methods of methyl acrylate mainly incl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/03C07C67/343C07C69/54
CPCB01J29/0341C07C67/343C07C69/54
Inventor 胡靖王爱丽卢志鹏殷恒波
Owner JIANGSU UNIV