LEV-zeotype magnesium aluminophosphates with variable Mg/Al ratios

Yanyan Wang; Lang Shao; Yi Li; Xu Li; Jiyang Li; Jihong Yu; Ruren Xu

doi:10.1039/c2dt12106a

LEV-zeotype magnesium aluminophosphates with variable Mg/Al ratios

Yanyan Wang, Lang Shao, Yi Li, Xu Li, Jiyang Li^*, Jihong Yu, Ruren Xu

^*Corresponding author for this work

Jilin University

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

15 Citations (Scopus)

Abstract

By using two different organic amines, n-methylpiperidine and 1,2-diaminocyclohexane (DACH), as the structure-directing agents (SDAs), two magnesium aluminophosphate molecular sieves (C ₆H ₁₄N) ₂[Mg ₂Al ₇(PO ₄) ₉] and (C ₆H ₁₄N ₂) _1.4(H ₂O) ₂H ₂[Mg ₂Al ₅(PO ₄) ₇], denoted as MgAPO-CJ67(a) and MgAPO-CJ67(b), have been synthesized under hydrothermal conditions. They are the first example of Mg incorporated aluminophosphates with the LEV-zeotype structure. The magnesium and aluminum atoms co-occupy the same crystallographic positions in the frameworks of MgAPO-CJ67(a) and MgAPO-CJ67(b), but with different Mg/Al ratios of 1:3.5 and 1:2.5, respectively. MgAPO-CJ67(a) exhibits higher thermal stability upon calcination than MgAPO-CJ67(b), and its framework keeps intact after the removal of occluded organic SDAs. The N ₂ adsorption on the calcined MgAPO-CJ67(a) sample gives the BET surface area of 386 m ² g ^-1. NH ₃-temperature programmed desorption (NH ₃-TPD) analysis shows that MgAPO-CJ67(a) has a medium acidity.

Original language	English
Pages (from-to)	6855-6860
Number of pages	6
Journal	Dalton Transactions
Volume	41
Issue number	22
DOIs	https://doi.org/10.1039/c2dt12106a
Publication status	Published - 14 Jun 2012
Externally published	Yes

Access to Document

10.1039/c2dt12106a

Cite this

@article{d827588f5741462c983fb235d94f3b9b,

title = "LEV-zeotype magnesium aluminophosphates with variable Mg/Al ratios",

abstract = "By using two different organic amines, n-methylpiperidine and 1,2-diaminocyclohexane (DACH), as the structure-directing agents (SDAs), two magnesium aluminophosphate molecular sieves (C 6H 14N) 2[Mg 2Al 7(PO 4) 9] and (C 6H 14N 2) 1.4(H 2O) 2H 2[Mg 2Al 5(PO 4) 7], denoted as MgAPO-CJ67(a) and MgAPO-CJ67(b), have been synthesized under hydrothermal conditions. They are the first example of Mg incorporated aluminophosphates with the LEV-zeotype structure. The magnesium and aluminum atoms co-occupy the same crystallographic positions in the frameworks of MgAPO-CJ67(a) and MgAPO-CJ67(b), but with different Mg/Al ratios of 1:3.5 and 1:2.5, respectively. MgAPO-CJ67(a) exhibits higher thermal stability upon calcination than MgAPO-CJ67(b), and its framework keeps intact after the removal of occluded organic SDAs. The N 2 adsorption on the calcined MgAPO-CJ67(a) sample gives the BET surface area of 386 m 2 g -1. NH 3-temperature programmed desorption (NH 3-TPD) analysis shows that MgAPO-CJ67(a) has a medium acidity.",

author = "Yanyan Wang and Lang Shao and Yi Li and Xu Li and Jiyang Li and Jihong Yu and Ruren Xu",

year = "2012",

month = jun,

day = "14",

doi = "10.1039/c2dt12106a",

language = "English",

volume = "41",

pages = "6855--6860",

journal = "Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "22",

}

TY - JOUR

T1 - LEV-zeotype magnesium aluminophosphates with variable Mg/Al ratios

AU - Wang, Yanyan

AU - Shao, Lang

AU - Li, Yi

AU - Li, Xu

AU - Li, Jiyang

AU - Yu, Jihong

AU - Xu, Ruren

PY - 2012/6/14

Y1 - 2012/6/14

N2 - By using two different organic amines, n-methylpiperidine and 1,2-diaminocyclohexane (DACH), as the structure-directing agents (SDAs), two magnesium aluminophosphate molecular sieves (C 6H 14N) 2[Mg 2Al 7(PO 4) 9] and (C 6H 14N 2) 1.4(H 2O) 2H 2[Mg 2Al 5(PO 4) 7], denoted as MgAPO-CJ67(a) and MgAPO-CJ67(b), have been synthesized under hydrothermal conditions. They are the first example of Mg incorporated aluminophosphates with the LEV-zeotype structure. The magnesium and aluminum atoms co-occupy the same crystallographic positions in the frameworks of MgAPO-CJ67(a) and MgAPO-CJ67(b), but with different Mg/Al ratios of 1:3.5 and 1:2.5, respectively. MgAPO-CJ67(a) exhibits higher thermal stability upon calcination than MgAPO-CJ67(b), and its framework keeps intact after the removal of occluded organic SDAs. The N 2 adsorption on the calcined MgAPO-CJ67(a) sample gives the BET surface area of 386 m 2 g -1. NH 3-temperature programmed desorption (NH 3-TPD) analysis shows that MgAPO-CJ67(a) has a medium acidity.

AB - By using two different organic amines, n-methylpiperidine and 1,2-diaminocyclohexane (DACH), as the structure-directing agents (SDAs), two magnesium aluminophosphate molecular sieves (C 6H 14N) 2[Mg 2Al 7(PO 4) 9] and (C 6H 14N 2) 1.4(H 2O) 2H 2[Mg 2Al 5(PO 4) 7], denoted as MgAPO-CJ67(a) and MgAPO-CJ67(b), have been synthesized under hydrothermal conditions. They are the first example of Mg incorporated aluminophosphates with the LEV-zeotype structure. The magnesium and aluminum atoms co-occupy the same crystallographic positions in the frameworks of MgAPO-CJ67(a) and MgAPO-CJ67(b), but with different Mg/Al ratios of 1:3.5 and 1:2.5, respectively. MgAPO-CJ67(a) exhibits higher thermal stability upon calcination than MgAPO-CJ67(b), and its framework keeps intact after the removal of occluded organic SDAs. The N 2 adsorption on the calcined MgAPO-CJ67(a) sample gives the BET surface area of 386 m 2 g -1. NH 3-temperature programmed desorption (NH 3-TPD) analysis shows that MgAPO-CJ67(a) has a medium acidity.

UR - http://www.scopus.com/inward/record.url?scp=84861302773&partnerID=8YFLogxK

U2 - 10.1039/c2dt12106a

DO - 10.1039/c2dt12106a

M3 - Article

AN - SCOPUS:84861302773

SN - 1477-9226

VL - 41

SP - 6855

EP - 6860

JO - Dalton Transactions

JF - Dalton Transactions

IS - 22

ER -

LEV-zeotype magnesium aluminophosphates with variable Mg/Al ratios

Abstract

Access to Document

Other files and links

Fingerprint

Cite this