Control of Crystal Morphology and Size of SAPO-56 Molecular Sieve
[1]ZHAN Yuzhong,DONG Jiajia,SONG Menglu,et al.Control of Crystal Morphology and Size of SAPO-56 Molecular Sieve[J].Journal of Zhengzhou University (Engineering Science),2014,35(06):23-26.[doi:10.3969/j.issn.1671-6833.2014.06006]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
35卷
Number of periods:
2014 06
Page number:
23-26
Column:
Public date:
2014-11-25
- Title:
- Control of Crystal Morphology and Size of SAPO-56 Molecular Sieve
- CLC:
- TQ426.95
- DOI:
- 10.3969/j.issn.1671-6833.2014.06006
- Abstract:
- SAPO-56 moleeular sieve was hydrothermally synthesized with N, N ,N’,N’-tetramehtyl-hexane-1 ,6-diamine ( TMHD) as template agent. The effeets of siliea alumina ratio, propylamine parlly replacing template, and seeding in synthetie system on morphology and size of SAP0-56 were investigated. The resultsshowed that pure SAP0-56 phase with similar erystallinity could be obtained under the experimental condi.tions. With the inerease of siliea alumina ralio, the morphology of SAP0-56 synthesized changed from hexa.gonal llake to disk, and the erystal size was about 20 pm. Propylamine partly replacing the template agenlcould deerease the erystallization time, and the synthesized SAPO-56 changed to thick culter top hexagonal.dipyramidal, but the erystal size showed little change. Further seeding into the synthetie system the SAP0-56changed to hexagonal-dipyramidal, and the erystal size deereased significantly to about 3 um. So the morphology and crystal size of SAPO-56 could be adjusted by changing experimental conditions.
- References:
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