Effect of zeolite geometry for propane selective oxidation on cation electrostatic field of Ca2+ exchanged zeolites.

J. Xu; Barbara Mojet; Leonardus Lefferts

doi:10.1016/j.micromeso.2005.11.040

Effect of zeolite geometry for propane selective oxidation on cation electrostatic field of Ca2+ exchanged zeolites.

J. Xu, Barbara Mojet, Leonardus Lefferts

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Abstract

The effects of zeolite geometry on propane selective oxidation were studied by in situ infrared spectrometry on Ca2+ exchanged Y, MOR and ZSM5 zeolites. Oxygen and propane adsorption at room temperature, revealed that the electrostatic field of Ca2+ increased in the order CaY < CaMOR < CaZSM5. The electrostatic field of Ca2+ cations in CaY and CaZSM5 was observed to correlate with propane selective oxidation activity and selectivity. At 353 K, low activity but high selectivity to acetone was observed for propane oxidation on CaY zeolite, while high activity and a 2:1 mixture of 2-propanol and acetone was observed on CaZSM5. CaMOR showed the lowest activity for oxygenates formation of propane oxidation, but deep oxidation to CO and CO2 was found. The results convincingly show that the geometrical structure of a zeolite determines activity and selectivity of propane partial oxidation on Ca2+ exchanged zeolites to a large extent.

Original language	Undefined
Pages (from-to)	187-195
Number of pages	9
Journal	Microporous and mesoporous materials
Volume	91
Issue number	1-3
DOIs	https://doi.org/10.1016/j.micromeso.2005.11.040
Publication status	Published - 2006

Keywords

IR-57954
METIS-231328

Access to Document

10.1016/j.micromeso.2005.11.040

Cite this

@article{24eb437ba9b44b4ca7b7755de6db33a6,

title = "Effect of zeolite geometry for propane selective oxidation on cation electrostatic field of Ca2+ exchanged zeolites.",

abstract = "The effects of zeolite geometry on propane selective oxidation were studied by in situ infrared spectrometry on Ca2+ exchanged Y, MOR and ZSM5 zeolites. Oxygen and propane adsorption at room temperature, revealed that the electrostatic field of Ca2+ increased in the order CaY < CaMOR < CaZSM5. The electrostatic field of Ca2+ cations in CaY and CaZSM5 was observed to correlate with propane selective oxidation activity and selectivity. At 353 K, low activity but high selectivity to acetone was observed for propane oxidation on CaY zeolite, while high activity and a 2:1 mixture of 2-propanol and acetone was observed on CaZSM5. CaMOR showed the lowest activity for oxygenates formation of propane oxidation, but deep oxidation to CO and CO2 was found. The results convincingly show that the geometrical structure of a zeolite determines activity and selectivity of propane partial oxidation on Ca2+ exchanged zeolites to a large extent.",

keywords = "IR-57954, METIS-231328",

author = "J. Xu and Barbara Mojet and Leonardus Lefferts",

year = "2006",

doi = "10.1016/j.micromeso.2005.11.040",

language = "Undefined",

volume = "91",

pages = "187--195",

journal = "Microporous and mesoporous materials",

issn = "1387-1811",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Effect of zeolite geometry for propane selective oxidation on cation electrostatic field of Ca2+ exchanged zeolites.

AU - Xu, J.

AU - Mojet, Barbara

AU - Lefferts, Leonardus

PY - 2006

Y1 - 2006

N2 - The effects of zeolite geometry on propane selective oxidation were studied by in situ infrared spectrometry on Ca2+ exchanged Y, MOR and ZSM5 zeolites. Oxygen and propane adsorption at room temperature, revealed that the electrostatic field of Ca2+ increased in the order CaY < CaMOR < CaZSM5. The electrostatic field of Ca2+ cations in CaY and CaZSM5 was observed to correlate with propane selective oxidation activity and selectivity. At 353 K, low activity but high selectivity to acetone was observed for propane oxidation on CaY zeolite, while high activity and a 2:1 mixture of 2-propanol and acetone was observed on CaZSM5. CaMOR showed the lowest activity for oxygenates formation of propane oxidation, but deep oxidation to CO and CO2 was found. The results convincingly show that the geometrical structure of a zeolite determines activity and selectivity of propane partial oxidation on Ca2+ exchanged zeolites to a large extent.

AB - The effects of zeolite geometry on propane selective oxidation were studied by in situ infrared spectrometry on Ca2+ exchanged Y, MOR and ZSM5 zeolites. Oxygen and propane adsorption at room temperature, revealed that the electrostatic field of Ca2+ increased in the order CaY < CaMOR < CaZSM5. The electrostatic field of Ca2+ cations in CaY and CaZSM5 was observed to correlate with propane selective oxidation activity and selectivity. At 353 K, low activity but high selectivity to acetone was observed for propane oxidation on CaY zeolite, while high activity and a 2:1 mixture of 2-propanol and acetone was observed on CaZSM5. CaMOR showed the lowest activity for oxygenates formation of propane oxidation, but deep oxidation to CO and CO2 was found. The results convincingly show that the geometrical structure of a zeolite determines activity and selectivity of propane partial oxidation on Ca2+ exchanged zeolites to a large extent.

KW - IR-57954

KW - METIS-231328

U2 - 10.1016/j.micromeso.2005.11.040

DO - 10.1016/j.micromeso.2005.11.040

M3 - Article

SN - 1387-1811

VL - 91

SP - 187

EP - 195

JO - Microporous and mesoporous materials

JF - Microporous and mesoporous materials

IS - 1-3

ER -