Ion association by time-of-flight mass spectrometry: a study of V-P-O catalysts

J. K. Schoer; R. S. Houk; R. J. Conzemius; G. L. Schrader

doi:10.1016/1044-0305(90)85048-Q

Ion association by time-of-flight mass spectrometry: a study of V-P-O catalysts

J. K. Schoer, R. S. Houk, R. J. Conzemius, G. L. Schrader

Chemical and Environmental Engineering

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Abstract

The oxidation catalysts (VO₂)P₂0₇ and β-VOPO₄ are studied by laser desorption time-of flight mass spectrometry. Mass spectra of both positive and negative ions are reported for these compounds. Individual scans are tested for ion association, that is, the consistent appearance of a given pair of ions in many scans. The structurally simpler {amalgamation}-VOPO₄ shows fewer associations than either (VO)₂P₂0₇ or an ¹⁸O-substituted analogue of _β-VOPO₄ even though the overall spectra from the three compounds do not differ greatly. These results indicate that the associations observed between ions may be sensitive to small differences in structure in the original specimen. Thus, the identification of ion association may provide information to supplement the mass spectrum of the sample.

Original language	English (US)
Pages (from-to)	129-137
Number of pages	9
Journal	Journal of the American Society for Mass Spectrometry
Volume	1
Issue number	2
DOIs	https://doi.org/10.1016/1044-0305(90)85048-Q
State	Published - Apr 1990

ASJC Scopus subject areas

Structural Biology
Spectroscopy

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title = "Ion association by time-of-flight mass spectrometry: a study of V-P-O catalysts",

abstract = "The oxidation catalysts (VO2)P207 and β-VOPO4 are studied by laser desorption time-of flight mass spectrometry. Mass spectra of both positive and negative ions are reported for these compounds. Individual scans are tested for ion association, that is, the consistent appearance of a given pair of ions in many scans. The structurally simpler {amalgamation}-VOPO4 shows fewer associations than either (VO)2P207 or an 18O-substituted analogue of β-VOPO4 even though the overall spectra from the three compounds do not differ greatly. These results indicate that the associations observed between ions may be sensitive to small differences in structure in the original specimen. Thus, the identification of ion association may provide information to supplement the mass spectrum of the sample.",

author = "Schoer, {J. K.} and Houk, {R. S.} and Conzemius, {R. J.} and Schrader, {G. L.}",

note = "Funding Information: Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under contract no. W-7405-Eng-82. This research was supported by the Director for Energy Research, Office of Basic Energy Sciences, the Advanced Research and Technology Development (ARTD) Program of the Office of Fossil Energy Research, Morgantown Energy Technology Center (D. Brdar, project leader), and the Materials Preparation Center of the Ames Laboratory. The assistance of Mark Lashier in preparing the samples and in discussing the results is gratefully acknowledged.",

year = "1990",

month = apr,

doi = "10.1016/1044-0305(90)85048-Q",

language = "English (US)",

volume = "1",

pages = "129--137",

journal = "Journal of the American Society for Mass Spectrometry",

issn = "1044-0305",

publisher = "Springer New York",

number = "2",

}

TY - JOUR

T1 - Ion association by time-of-flight mass spectrometry

T2 - a study of V-P-O catalysts

AU - Schoer, J. K.

AU - Houk, R. S.

AU - Conzemius, R. J.

AU - Schrader, G. L.

N1 - Funding Information: Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under contract no. W-7405-Eng-82. This research was supported by the Director for Energy Research, Office of Basic Energy Sciences, the Advanced Research and Technology Development (ARTD) Program of the Office of Fossil Energy Research, Morgantown Energy Technology Center (D. Brdar, project leader), and the Materials Preparation Center of the Ames Laboratory. The assistance of Mark Lashier in preparing the samples and in discussing the results is gratefully acknowledged.

PY - 1990/4

Y1 - 1990/4

N2 - The oxidation catalysts (VO2)P207 and β-VOPO4 are studied by laser desorption time-of flight mass spectrometry. Mass spectra of both positive and negative ions are reported for these compounds. Individual scans are tested for ion association, that is, the consistent appearance of a given pair of ions in many scans. The structurally simpler {amalgamation}-VOPO4 shows fewer associations than either (VO)2P207 or an 18O-substituted analogue of β-VOPO4 even though the overall spectra from the three compounds do not differ greatly. These results indicate that the associations observed between ions may be sensitive to small differences in structure in the original specimen. Thus, the identification of ion association may provide information to supplement the mass spectrum of the sample.

AB - The oxidation catalysts (VO2)P207 and β-VOPO4 are studied by laser desorption time-of flight mass spectrometry. Mass spectra of both positive and negative ions are reported for these compounds. Individual scans are tested for ion association, that is, the consistent appearance of a given pair of ions in many scans. The structurally simpler {amalgamation}-VOPO4 shows fewer associations than either (VO)2P207 or an 18O-substituted analogue of β-VOPO4 even though the overall spectra from the three compounds do not differ greatly. These results indicate that the associations observed between ions may be sensitive to small differences in structure in the original specimen. Thus, the identification of ion association may provide information to supplement the mass spectrum of the sample.

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JO - Journal of the American Society for Mass Spectrometry

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Ion association by time-of-flight mass spectrometry: a study of V-P-O catalysts

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