CN105329911A - Preparation method of 5A molecular sieve - Google Patents
Preparation method of 5A molecular sieve Download PDFInfo
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- CN105329911A CN105329911A CN201510786034.2A CN201510786034A CN105329911A CN 105329911 A CN105329911 A CN 105329911A CN 201510786034 A CN201510786034 A CN 201510786034A CN 105329911 A CN105329911 A CN 105329911A
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Abstract
The invention relates to a preparation method of a 5A molecular sieve. The preparation method of the 5A molecular sieve includes the following concrete steps that 1, a certain amount of sodium hydroxide is weighed and added into a certain amount of deionized water to be dissolved; 2, a certain amount of ethyl orthosilicate is weighed and added into the sodium hydroxide solution drop by drop; 3, a certain amount of absolute ethyl alcohol is added and stirred for 1 h, and a silicon source is obtained; 4, a certain amount of sodium metaaluminate is weighed and added into a certain amount of deionized water to be dissolved, and an aluminum source is obtained; 5, the silicon source is poured into the aluminum source for gelling and ageing, crystallization is performed for a period of time at a certain temperature, a 4A molecular sieve is crystallized out, filtering and washing are performed till the pH is smaller than 9, and 4A molecular sieve raw powder is obtained after drying; 6, the obtained 4A molecular sieve raw powder is added into a 1 mol/L calcium chloride solution according to the solid-liquid volume ratio of 1:15. The preparation method of the 5A molecular sieve is simple, applicable to industrial production and high in reliability.
Description
Technical field
The present invention relates to a kind of preparation method of molecular sieve.
Background technology
According to the chemical consulting firm investigation of New York PoundRidge, the demand of 1990-2010 whole world alkylbenzene articles for washing increases to 3.5Mt by 2.5Mt, correspondingly will increase to 3.0MT by 2.4Mt to the demand of high purity liquid wax.Since late 1950s, dewaxing by molecular sieve technology mainly adopts the ADS type 5A adsorbent of molecular sieve of Uop Inc..1998, Jin Ling petrochemical corporation (complex) adopts its patented technology to produce first batch of domestic spherical model-A molecular sieves, and on the 50kt/aMolex full scale plant of Nanjing petrochemical industry alkylbenzene factory introduction, instead of the sorbent material of import, achieve the production domesticization of liquid phase dewaxing industrial adsorbents.
Summary of the invention
The present invention relates to a kind of preparation method of spherical model-A molecular sieves.
The present invention relates to a kind of preparation method of 5A molecular sieve, its concrete preparation process is as follows: (1) takes a certain amount of sodium hydroxide and adds quantitative deionized water dissolving; (2) take a certain amount of tetraethoxy, dropwise join in sodium hydroxide solution; (3) add a certain amount of dehydrated alcohol, stir 1h, obtain silicon source; (4) weigh a certain amount of sodium metaaluminate and add quantitative deionized water dissolving, obtain aluminium source; (5) silicon source is poured in aluminium source plastic, aging, crystallization for some time at a certain temperature, crystallization goes out 4A molecular sieve, filter, wash to pH<9, oven dry, obtained 4A molecular screen primary powder joins in the calcium chloride solution of 1mol/L by solid-liquid volume ratio 1:15 by obtained 4A molecular screen primary powder (6), ion-exchange 4h at 90-98 DEG C; (7) solid through suction filtration, washing to without Cl
-put into baking oven after existence dry, obtain 5A molecular screen primary powder; (8) 5A molecular screen primary powder is put people's retort furnace, roasting 4h at 500 DEG C, obtain the 5A molecular sieve activated.
The preparation method of 5A molecular sieve of the present invention, preparation method is simple, can suitability for industrialized production, and reliability is strong.
Embodiment:
The present invention relates to a kind of preparation method of 5A molecular sieve, its concrete preparation process is as follows: (1) takes a certain amount of sodium hydroxide and adds quantitative deionized water dissolving; (2) take a certain amount of tetraethoxy, dropwise join in sodium hydroxide solution; (3) add a certain amount of dehydrated alcohol, stir 1h, obtain silicon source; (4) weigh a certain amount of sodium metaaluminate and add quantitative deionized water dissolving, obtain aluminium source; (5) silicon source is poured in aluminium source plastic, aging, crystallization for some time at a certain temperature, crystallization goes out 4A molecular sieve, filter, wash to pH<9, oven dry, obtained 4A molecular screen primary powder joins in the calcium chloride solution of 1mol/L by solid-liquid volume ratio 1:15 by obtained 4A molecular screen primary powder (6), ion-exchange 4h at 90-98 DEG C; (7) solid through suction filtration, washing to without Cl
-put into baking oven after existence dry, obtain 5A molecular screen primary powder; (8) 5A molecular screen primary powder is put people's retort furnace, roasting 4h at 500 DEG C, obtain the 5A molecular sieve activated.
Claims (1)
1. a preparation method for 5A molecular sieve, is characterized in that comprising following concrete preparation process: (1) takes a certain amount of sodium hydroxide and adds quantitative deionized water dissolving; (2) take a certain amount of tetraethoxy, dropwise join in sodium hydroxide solution; (3) add a certain amount of dehydrated alcohol, stir 1h, obtain silicon source; (4) weigh a certain amount of sodium metaaluminate and add quantitative deionized water dissolving, obtain aluminium source; (5) silicon source is poured in aluminium source plastic, aging, crystallization for some time at a certain temperature, crystallization goes out 4A molecular sieve, filter, wash to pH<9, oven dry, obtained 4A molecular screen primary powder joins in the calcium chloride solution of 1mol/L by solid-liquid volume ratio 1:15 by obtained 4A molecular screen primary powder (6), ion-exchange 4h at 90-98 DEG C; (7) solid through suction filtration, washing to without Cl
-put into baking oven after existence dry, obtain 5A molecular screen primary powder; (8) 5A molecular screen primary powder is put people's retort furnace, roasting 4h at 500 DEG C, obtain the 5A molecular sieve activated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786034.2A CN105329911A (en) | 2015-11-17 | 2015-11-17 | Preparation method of 5A molecular sieve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510786034.2A CN105329911A (en) | 2015-11-17 | 2015-11-17 | Preparation method of 5A molecular sieve |
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| CN105329911A true CN105329911A (en) | 2016-02-17 |
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| CN201510786034.2A Pending CN105329911A (en) | 2015-11-17 | 2015-11-17 | Preparation method of 5A molecular sieve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226473A (en) * | 2017-05-04 | 2017-10-03 | 明光市飞洲新材料有限公司 | A kind of preparation method of calcium type molecular sieve |
| CN107311195A (en) * | 2017-07-31 | 2017-11-03 | 西安科技大学 | A kind of preparation method and application of magnetic 5A molecular sieves |
| CN109499527A (en) * | 2018-11-29 | 2019-03-22 | 华南理工大学 | A kind of Ca2+And Ag+Modified absorbing material and the preparation method and application thereof |
| CN110002454A (en) * | 2019-02-26 | 2019-07-12 | 广东省建筑科学研究院集团股份有限公司 | A kind of honeycomb Si-Al composite membrane compatible with FEVE resin and preparation method thereof |
| CN113213503A (en) * | 2021-06-23 | 2021-08-06 | 南京永成分子筛有限公司 | Sodium-based oxygen generation molecular sieve and preparation process thereof |
-
2015
- 2015-11-17 CN CN201510786034.2A patent/CN105329911A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226473A (en) * | 2017-05-04 | 2017-10-03 | 明光市飞洲新材料有限公司 | A kind of preparation method of calcium type molecular sieve |
| CN107311195A (en) * | 2017-07-31 | 2017-11-03 | 西安科技大学 | A kind of preparation method and application of magnetic 5A molecular sieves |
| CN109499527A (en) * | 2018-11-29 | 2019-03-22 | 华南理工大学 | A kind of Ca2+And Ag+Modified absorbing material and the preparation method and application thereof |
| CN109499527B (en) * | 2018-11-29 | 2021-08-10 | 华南理工大学 | Ca2+And Ag+Modified adsorption material and preparation method and application thereof |
| CN110002454A (en) * | 2019-02-26 | 2019-07-12 | 广东省建筑科学研究院集团股份有限公司 | A kind of honeycomb Si-Al composite membrane compatible with FEVE resin and preparation method thereof |
| CN113213503A (en) * | 2021-06-23 | 2021-08-06 | 南京永成分子筛有限公司 | Sodium-based oxygen generation molecular sieve and preparation process thereof |
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Application publication date: 20160217 |
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| WD01 | Invention patent application deemed withdrawn after publication |