Suzuki, K.; Nishio, T.; Katada, N.; Sastre Navarro, GI.; Niwa, M. (2011). Ammonia IRMS-TPD measurements on Brønsted acidity of proton-formed SAPO-34. Physical Chemistry Chemical Physics. 13(8):3311-3318. doi:10.1039/c0cp00961j
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/84999
Title:
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Ammonia IRMS-TPD measurements on Brønsted acidity of proton-formed SAPO-34
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Author:
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Suzuki, Katsuki
Nishio, Takuma
Katada, Naonobu
Sastre Navarro, German Ignacio
Niwa, Miki
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UPV Unit:
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Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química
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Issued date:
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Abstract:
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[EN] By utilizing the advantages of a combined method of IRMS-TPD of ammonia and DFT calculations, the solid acidity of HSAPO-34 was studied. The number, strength and structure of the Bronsted OH were measured experimentally. ...[+]
[EN] By utilizing the advantages of a combined method of IRMS-TPD of ammonia and DFT calculations, the solid acidity of HSAPO-34 was studied. The number, strength and structure of the Bronsted OH were measured experimentally. The quantitative measurements and DFT calculations supported the identification of Bronsted OH to account for the generation model of the Bronsted OH primarily located in the edge of the Si domain (island). The acid strength of SAPO-34 was slightly weaker than that of chabazite, a zeolite with the same structure. Thus, some important insights were obtained to understand the acid site generation of SAPO-34.
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Subjects:
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SILICOALUMINOPHOSPHATE MOLECULAR-SIEVES
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DENSITY-FUNCTIONAL CALCULATION
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LIGHT OLEFINS
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QUANTITATIVE MEASUREMENTS
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DFT CALCULATION
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CONVERSION
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METHANOL
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ZEOLITE
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CATALYST
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SITES
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Copyrigths:
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Cerrado |
Source:
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Physical Chemistry Chemical Physics. (issn:
1463-9076
) (eissn:
1463-9084
)
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DOI:
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10.1039/c0cp00961j
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Publisher:
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Royal Society of Chemistry
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Publisher version:
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http://doi.org/10.1039/c0cp00961j
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Project ID:
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Ministry of Education, Culture, Sports, Science and Technology, Japan [B: 21360396] [C: 20560721]
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Thanks:
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This work is supported by the Grant-in-Aid for Scientific Research (B: 21360396 and C: 20560721) from Ministry of Education, Culture, Sports, Science and Technology, Japan.
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Type:
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Artículo
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