Preparation method and application of aluminum tin phosphate molecular sieve catalyst

A technology of aluminum tin phosphate and molecular sieve, which is applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of few application fields and little research on abietic acid oxidation reaction, so as to save the distillation process. , the structure regularity and order, the effect of good applicability

Pending Publication Date: 2022-07-05
云南锡业集团(控股)有限责任公司研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dehydroabietic acid can be prepared by the disproportionation reaction of abietic acid, and there is a relatively mature process; but the oxidation reaction of abietic acid is rarely studied, because there are not many application fields of oxidized rosin, and in most application fields, abietic acid Oxidation is considered a side reaction process to be avoided

Method used

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  • Preparation method and application of aluminum tin phosphate molecular sieve catalyst
  • Preparation method and application of aluminum tin phosphate molecular sieve catalyst
  • Preparation method and application of aluminum tin phosphate molecular sieve catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Phosphoric acid, pseudo-boehmite, tin chloride, triethylamine and terpineol were mixed, placed in a hydrothermal kettle, and subjected to microwave crystallization at 200 ° C for 3 hours. After the crystallization was completed, the product was filtered, washed, Drying and calcining at 900°C for 2 hours to obtain an aluminum tin phosphate molecular sieve catalyst, wherein the molar ratios of phosphoric acid to pseudo-boehmite, tin chloride, triethylamine and terpineol are 1.1:0.8, 1.1:0.2, and 1.1, respectively. :1.4, 1.1:50;

[0025] The catalyst has an AFI topology, namely SnAPO-5 (see figure 1 ), the molar substitution of Sn to aluminum is 17.6%. Average pore size 3.3nm, specific surface area 192m 2 / g, pore volume 0.27cm 3 / g (see figure 2 ).

[0026] The SnAPO-5 molecular sieve catalyst prepared in the present embodiment is used in the catalyzing reaction of L-pimamate oxidation, and specifically includes the following steps:

[0027] Take L-pimamate and pla...

Embodiment 2

[0030] Phosphoric acid, aluminum hydroxide, tin chloride, triethylamine and ethylene glycol were mixed, placed in a hydrothermal kettle, aged for 2 hours, and then microwaved at 180 °C for 5 hours. After the crystallization, the product was filtered, Washing, drying, and calcining at 300 °C for 5 h to obtain an aluminum tin phosphate molecular sieve catalyst, wherein the molar ratios of phosphoric acid to aluminum hydroxide, tin chloride, triethylamine, and ethylene glycol are 1.1:0.6, 1.1:0.4, and 1.1, respectively. :1.2, 1.1:40;

[0031] The catalyst has an AFI topology, namely SnAPO-5, the molar substitution of Sn to aluminum is 31.5%; the average pore size is 2.1 nm, and the specific surface area is 173 m 2 / g, pore volume 0.22cm 3 / g.

[0032] The SnAPO-5 molecular sieve catalyst prepared in the present embodiment is used to catalyze the abietic acid oxidation reaction, and specifically includes the following steps:

[0033] Take abietic acid and place it in a four-por...

Embodiment 3

[0036] Phosphoric acid, aluminum hydroxide, tin chloride, triethylamine and propylene glycol were mixed, placed in a hydrothermal kettle, aged for 3 hours, and then microwaved for 5 hours at 160 °C. After the crystallization, the product was filtered, washed, Drying and calcining at 600°C for 4 hours to obtain an aluminum tin phosphate molecular sieve catalyst, wherein the molar ratios of phosphoric acid to aluminum hydroxide, tin chloride, triethylamine, and propylene glycol are 1.1:0.9, 1.1:0.1, 1.1:1.1, and 1.1, respectively. :20;

[0037] The catalyst has an AFI topology, namely SnAPO-5, with a molar substitution of Sn to Al of 7.7%. Average pore size 2.4nm, specific surface area 145m 2 / g, pore volume 0.19cm 3 / g.

[0038] The SnAPO-5 molecular sieve catalyst prepared in the present embodiment is used to catalyze the oxidation reaction of levopimaric acid, and specifically includes the following steps:

[0039] Take L-pimamate and place it in a four-port reactor, add ...

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Abstract

The invention discloses a preparation method of an aluminum tin phosphate molecular sieve catalyst, and belongs to the field of chemical engineering, the catalyst is prepared by the following steps: mixing a phosphorus source, an aluminum source, a tin source, a structure-directing agent and a solvent in proportion, placing in a hydrothermal reaction kettle, aging for 0-5 hours, then carrying out microwave crystallization at 160-220 DEG C for 1-8 hours, after the crystallization is finished, filtering, washing and drying the product, and roasting at 300-900 DEG C for 2-6 hours to obtain the aluminum tin phosphate molecular sieve catalyst. The aluminum tin phosphate molecular sieve catalyst is obtained; the catalyst is used for rosin resin acid oxidation reaction, and is simple in process method, low in cost, excellent in thermal stability, good in catalytic effect and easy to recover.

Description

technical field [0001] The invention relates to a preparation method and application of an aluminum tin phosphate molecular sieve catalyst, and belongs to the field of chemical industry. Background technique [0002] Rosin is the main component of rosin and an important natural renewable resource. The components include various resin acids and a small amount of fatty acids and neutral substances. Rosin and its derivatives have important uses in medical treatment, chemical industry, biosynthesis and so on. Abitic acid type resin acid is the main component of rosin. It belongs to tricyclic diterpenoid organic acid. There is a set of conjugated double bonds in the skeleton, so it has active chemical properties and has the most diverse uses. [0003] Rosin and its derivatives are important components in flux, which play the role of removing oxides, providing insulation, moisture resistance, and heat transfer during the soldering process. The main component of rosin is abietic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/84C09F1/00
CPCB01J29/84C09F1/00
Inventor 杨晨赵玲彦李伟超梁华鑫孙佳白海龙黄迎红
Owner 云南锡业集团(控股)有限责任公司研发中心
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