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A kind of preparation method of aluminosilicate supported strong basic solid base

A kind of aluminosilicate and supported technology, which is applied in the field of preparation of aluminosilicate-supported strong alkaline solid base, which can solve the problems of limited varieties and achieve increased application value, high thermal stability and strong alkalinity Effect

Inactive Publication Date: 2019-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, because solid base is a new type of catalyst, the variety of solid base catalysts actually used in industrial production is still very limited.

Method used

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  • A kind of preparation method of aluminosilicate supported strong basic solid base
  • A kind of preparation method of aluminosilicate supported strong basic solid base
  • A kind of preparation method of aluminosilicate supported strong basic solid base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Preparation of loaded solid base

[0030] 0.75g boehmite and 25.0g sodium hydroxide are dissolved in 15.0g deionized water and stirred by a high-speed homogeneous disperser to form a boehmite sol; 0.2g CTAB (cetyltrimethylammonium bromide) is mixed and dispersed homogeneously to form a gel; then transfer the gel to a hydrothermal reaction kettle with a filling degree of 75%, and then put it into an electric heating drum Hydrothermal crystallization at 150°C for 10 hours in an air constant temperature drying oven, and naturally cooled to room temperature. The characterization results show that it is aluminosilicate nanoporous material. For the characterization results, see Figure 1a , Figure 1b ; add potassium nitrate so that the doping quality of potassium nitrate is 5% of the mass of the base material after hydrothermal crystallization, add distilled water, disperse through a homogeneous disperser, and after drying, calcinate at 500 ° C for 10 hours to finally pre...

Embodiment 2

[0041] 1. Preparation of loaded solid base

[0042]0.75g boehmite and 25.0g sodium hydroxide are dissolved in 15.0g deionized water and stirred by a high-speed homogeneous disperser to form a boehmite sol; 0.2g CTAB is mixed and homogeneously dispersed to form a gel; then the gel is transferred to a hydrothermal reaction kettle with a filling degree of 75%, and then placed in an electric blast constant temperature drying oven for hydrothermal crystallization at 150°C 10h, naturally cool to room temperature; add potassium nitrate so that the doping quality of potassium nitrate is 7.5% of the mass of the base material after hydrothermal crystallization, add distilled water, homogeneously disperse, and then dry, then calcinate at 800°C for 16h , and finally a solid base is prepared.

[0043] 2. Detection of alkali amount and alkali strength of solid alkali

[0044] Determination method is the same as that of Example 1, and the alkali amount of the solid base prepared by benzoic...

Embodiment 3

[0046] 1. Preparation of loaded solid base

[0047] 0.75g boehmite and 25.0g sodium hydroxide were dissolved in 15.0g deionized water and stirred by a high-speed homogeneous disperser to form a boehmite sol; 0.2g CTAB is mixed and homogeneously dispersed to form a gel; then the gel is transferred to a hydrothermal reaction kettle with a filling degree of 75%, and then placed in an electric blast constant temperature drying oven for hydrothermal crystallization at 150°C 10h, naturally cool to room temperature; add potassium nitrate so that the doping quality of potassium nitrate is 7.5% of the mass of the base material after hydrothermal crystallization, add distilled water, homogeneously disperse, and then dry, then calcined at 600°C for 14h , and finally a solid base is prepared.

[0048] 2. Detection of alkali amount and alkali strength of solid alkali

[0049] Assay method is the same as that of Example 1, and the alkali amount of the solid base prepared by benzoic acid-s...

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Abstract

The invention discloses a preparation method of aluminosilicate-loaded strong alkaline solid alkali, which belongs to the field of solid alkali preparation. The solid base is a catalytic material. Using aluminosilicate nanomaterials as carriers, KNO 3 As an alkaline modifier, the symbiotic doping method is used to prepare a strong alkaline aluminosilicate composite solid alkali material with stronger alkalinity, larger alkali content, and more specific alkaline center distribution. The present invention uses boehmite sol and silica sol to prepare an aluminosilicate carrier, and combines the doping method to synthesize a solid alkali catalytic material, which enriches the types of solid alkali catalysts.

Description

technical field [0001] The invention relates to the technical field of preparation of solid base catalytic materials, in particular to a preparation method of aluminosilicate-loaded strong basic solid base. Background technique [0002] Solid base catalysts have the advantages of high activity, high selectivity, mild reaction conditions, easy separation of products, economical and environmental protection, and less corrosive equipment, and have attracted widespread attention in industrial production. However, compared with solid acid catalysts, solid base catalysts started late and developed slowly. With the wide-scale application of basic catalysts in the field of heterogeneous catalytic reactions, the demand for solid bases is increasing. How to develop new solid base catalysts that are simple to prepare and low in cost has become a research hotspot. [0003] Aluminosilicate material is an important inorganic material with special pore structure and excellent selectivity....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/04B01J35/10
CPCB01J23/04B01J35/61
Inventor 江琦温俊磊
Owner SOUTH CHINA UNIV OF TECH