Selective synthesis of the SAPO-5 and SAPO-34 mixed phases by controlling Si/Al ratio and their excellent catalytic methanol to olefins performance

Syed ul Hasnain Bakhtiar; Sher Ali; Yongli Dong; Xiaotong Wang; Fulong Yuan; Zhibin Li; Yujun Zhu

doi:10.1007/s10934-018-0558-7

Selective synthesis of the SAPO-5 and SAPO-34 mixed phases by controlling Si/Al ratio and their excellent catalytic methanol to olefins performance

Syed ul Hasnain Bakhtiar, Sher Ali, Yongli Dong, Xiaotong Wang, Fulong Yuan, Zhibin Li^*, Yujun Zhu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The selective synthesis of SAPO-5, SAPO-5/SAPO-34 mixture and SAPO-34 was performed by increasing Si/Al ratio and pH through hydrothermal synthesis route, in which the product was successively switched from AFI to AFI/CHA and to CHA. The samples were characterized by XRD, XRF, SEM, and NH₃-TPD techniques. It indicates that the SAPO-5/SAPO-34 mixture exhibits higher acidity than the pure SAPO-5 and SAPO-34 phases. During methanol-to-olefins reaction, the catalytic lifetime of the SAPO-5/SAPO-34 mixture was significantly longer than that of SAPO-34, which may be attributed to the moderate acidity of the SAPO-5/SAPO-34 mixture.

Original language	English
Pages (from-to)	1455-1461
Number of pages	7
Journal	Journal of Porous Materials
Volume	25
Issue number	5
DOIs	https://doi.org/10.1007/s10934-018-0558-7
State	Published - 1 Oct 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018, Springer Science+Business Media, LLC, part of Springer Nature.

Keywords

Acidity
Intermediate phase
Lifetime
Methanol to olefins (MTO)
SAPO-34

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1007/s10934-018-0558-7

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title = "Selective synthesis of the SAPO-5 and SAPO-34 mixed phases by controlling Si/Al ratio and their excellent catalytic methanol to olefins performance",

abstract = "The selective synthesis of SAPO-5, SAPO-5/SAPO-34 mixture and SAPO-34 was performed by increasing Si/Al ratio and pH through hydrothermal synthesis route, in which the product was successively switched from AFI to AFI/CHA and to CHA. The samples were characterized by XRD, XRF, SEM, and NH3-TPD techniques. It indicates that the SAPO-5/SAPO-34 mixture exhibits higher acidity than the pure SAPO-5 and SAPO-34 phases. During methanol-to-olefins reaction, the catalytic lifetime of the SAPO-5/SAPO-34 mixture was significantly longer than that of SAPO-34, which may be attributed to the moderate acidity of the SAPO-5/SAPO-34 mixture.",

keywords = "Acidity, Intermediate phase, Lifetime, Methanol to olefins (MTO), SAPO-34",

author = "Bakhtiar, \{Syed ul Hasnain\} and Sher Ali and Yongli Dong and Xiaotong Wang and Fulong Yuan and Zhibin Li and Yujun Zhu",

note = "Publisher Copyright: {\textcopyright} 2018, Springer Science+Business Media, LLC, part of Springer Nature.",

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T1 - Selective synthesis of the SAPO-5 and SAPO-34 mixed phases by controlling Si/Al ratio and their excellent catalytic methanol to olefins performance

AU - Bakhtiar, Syed ul Hasnain

AU - Ali, Sher

AU - Dong, Yongli

AU - Wang, Xiaotong

AU - Yuan, Fulong

AU - Li, Zhibin

AU - Zhu, Yujun

PY - 2018/10/1

Y1 - 2018/10/1

N2 - The selective synthesis of SAPO-5, SAPO-5/SAPO-34 mixture and SAPO-34 was performed by increasing Si/Al ratio and pH through hydrothermal synthesis route, in which the product was successively switched from AFI to AFI/CHA and to CHA. The samples were characterized by XRD, XRF, SEM, and NH3-TPD techniques. It indicates that the SAPO-5/SAPO-34 mixture exhibits higher acidity than the pure SAPO-5 and SAPO-34 phases. During methanol-to-olefins reaction, the catalytic lifetime of the SAPO-5/SAPO-34 mixture was significantly longer than that of SAPO-34, which may be attributed to the moderate acidity of the SAPO-5/SAPO-34 mixture.

AB - The selective synthesis of SAPO-5, SAPO-5/SAPO-34 mixture and SAPO-34 was performed by increasing Si/Al ratio and pH through hydrothermal synthesis route, in which the product was successively switched from AFI to AFI/CHA and to CHA. The samples were characterized by XRD, XRF, SEM, and NH3-TPD techniques. It indicates that the SAPO-5/SAPO-34 mixture exhibits higher acidity than the pure SAPO-5 and SAPO-34 phases. During methanol-to-olefins reaction, the catalytic lifetime of the SAPO-5/SAPO-34 mixture was significantly longer than that of SAPO-34, which may be attributed to the moderate acidity of the SAPO-5/SAPO-34 mixture.

KW - Acidity

KW - Intermediate phase

KW - Lifetime

KW - Methanol to olefins (MTO)

KW - SAPO-34

UR - https://www.scopus.com/pages/publications/85040674736

U2 - 10.1007/s10934-018-0558-7

DO - 10.1007/s10934-018-0558-7

M3 - Article

AN - SCOPUS:85040674736

SN - 1380-2224

VL - 25

SP - 1455

EP - 1461

JO - Journal of Porous Materials

JF - Journal of Porous Materials

IS - 5

ER -

Selective synthesis of the SAPO-5 and SAPO-34 mixed phases by controlling Si/Al ratio and their excellent catalytic methanol to olefins performance

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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