Synthesis method of ordered super-micropore material with broad bean shape

A synthesis method and ultra-microporous technology, which is applied in chemical instruments and methods, molecular sieve compounds, molecular sieves and alkali exchange compounds, etc., can solve the loss of further modulation of material morphology, lack of systematic research, depth, and poor correlation, etc. problem, to achieve the effect of rigid and stable shape, simple reaction system and safe operation

Inactive Publication Date: 2018-12-11
JIANGXI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some progress has been made in the synthesis of ultramicroporous molecular sieves by this method, in order to obtain regular ultramicropore channels, templates with special structures and harsh reaction conditions are usually required, which directly lead to the independent and interrelated results. Poor performance, lack of systematic and in-depth related research, thus losing the possibility of further modulation of material morphology, currently only Kazuhisa Yano et al. Regular and orderly channels, compared with the large family of mesoporous molecular sieve materials, the morphology modulation of ordered ultramicroporous molecular sieves is still a blank

Method used

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  • Synthesis method of ordered super-micropore material with broad bean shape
  • Synthesis method of ordered super-micropore material with broad bean shape
  • Synthesis method of ordered super-micropore material with broad bean shape

Examples

Experimental program
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Effect test

Embodiment 1

[0023] At 35°C, the template agent dehydroabietyltrimethylammonium bromide (DTAB) and methylamine were dissolved in deionized water, and tetraethyl orthosilicate (TEOS) was added under stirring conditions. The moles of the above raw materials than TEOS ׃DTAB ׃methylamine ׃H 2 O=1.0׃0.15׃2.68׃699.06, continue to stir for 30 s, put it into a hydrothermal reaction kettle after standing for 24 h, crystallize at 100 °C for 12 h, wash and filter and dry in an oven at 100 °C for 6 h, Obtain silicon dioxide precursor powder.

Embodiment 2

[0025] At 30°C, the template agent dehydroabietyltrimethylammonium bromide (DTAB) and ethylamine were dissolved in deionized water, and tetraethyl orthosilicate (TEOS) was added under the condition of stirring. than TEOS ׃DTAB ׃ethylamine ׃H 2 O=1.0׃0.15׃2.68׃699.06, continue to stir for 30s, put it into a hydrothermal reaction kettle after standing for 24h, crystallize at 100°C for 24h, wash and filter and dry in an oven at 95°C for 6h to obtain Silicon precursor powder.

Embodiment 3

[0027] At 38°C, the template agent dehydroabietyltrimethylammonium bromide (DTAB) and propylamine were dissolved in deionized water, and tetraethyl orthosilicate (TEOS) was added under stirring conditions. The molar ratio of the above raw materials for TEOS ׃DTAB ׃ propylamine ׃H 2 O=1.0׃0.15׃2.68׃699.06, continue to stir for 30s, put it into a hydrothermal reaction kettle after standing and aging for 24h, crystallize at 100°C for 48h, wash and filter and dry in an oven at 100°C for 5h to obtain carbon dioxide Silicon precursor powder.

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Abstract

The invention discloses a simple method for preparing an ordered super-micropore material with a broad bean shape. The method takes a template agent, an organic alkali source and an organic silicon source as raw materials, and ordered super-micropore material precursor powder with the broad bean shape is synthesized by utilizing a dissolution and standing crystallization method; then the ordered super-micropore material precursor powder is subjected to high-temperature calcination to obtain an ordered super-micropore silicon dioxide molecular sieve with the broad bean shape. The method disclosed by the invention has the advantages that dehydrogenated abietyl quaternary ammonium salt derived from a natural renewable raw material rosin is used as the template agent, sources are abundant andthe price is low; a prepared ordered super-micropore silicon dioxide material has the advantages of large specific surface area, high pore volume and narrow and ordered pore diameter distribution, andhas a wide application prospect in the aspects of shape selective catalysis, medicine solubilization and controlled release.

Description

technical field [0001] The invention belongs to the field of inorganic porous materials, and in particular relates to a method for synthesizing an ordered ultramicroporous silica material with broad bean-like morphology. Background technique [0002] As a special porous material, ordered ultramicroporous materials have broad prospects in the fields of chemical engineering, biomedicine, optoelectronic devices, energy and environment. [0003] At this stage, a large number of researchers have synthesized a series of ordered mesoporous materials with different structures through the "soft template" method, such as: SBA, HMS, MSU and FDU. The achievable range of the pore diameter of the porous material is extended to 2.7-12nm. As a porous material with a pore size between micropores and mesoporous materials, ordered ultramicroporous materials play an important role in heavy oil processing, synthesis of new drug intermediates, and production of special chemicals due to their exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/00C01B37/00C01B33/12
CPCC01B33/12C01B37/00C01B39/00C01P2002/72C01P2004/04
Inventor 王鹏邹秀秀范国荣陈尚钘廖圣良司红燕王宗德罗海
Owner JIANGXI AGRICULTURAL UNIVERSITY
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