Size-dependent gas phase reactivity of tantalum cluster cations with small alcohols

K. Lange; B. Visser; D. Neuwirth; J. F. Eckhard; U. Boesl; M. Tschurl; K. H. Bowen; U. Heiz

doi:10.1016/j.ijms.2014.10.010

Size-dependent gas phase reactivity of tantalum cluster cations with small alcohols

K. Lange, B. Visser, D. Neuwirth, J. F. Eckhard, U. Boesl, M. Tschurl, K. H. Bowen, U. Heiz

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Abstract

Small tantalum cluster cations (Ta_4-9⁺) were produced in the gas phase by laser vaporization. Various alcohols (methanol, ethanol, n-propanol and 2-propanol) were consecutively added to the cluster beam in a pulsed jet and allowed to react to an extent of conversion of approximately 50%. The charged reaction products were subsequently measured using time of flight mass spectrometry. Two distinct reaction pathways were observed, involving complete dehydrogenation or OH abstraction from the alcohol molecule. The relative total reaction yield was found to not vary significantly within the cluster size regime studied. The branching ratios for the reaction demonstrated a cluster-size dependence, with a minimum of OH abstraction occurring for Ta₇⁺.

Original language	English
Pages (from-to)	9-13
Number of pages	5
Journal	International Journal of Mass Spectrometry
Volume	375
DOIs	https://doi.org/10.1016/j.ijms.2014.10.010
State	Published - 1 Jan 2015

Keywords

Cluster reactivity
Dehydrogenation
Metal cluster cations
OH abstraction
TOFMS
Tantalum

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title = "Size-dependent gas phase reactivity of tantalum cluster cations with small alcohols",

abstract = "Small tantalum cluster cations (Ta4-9+) were produced in the gas phase by laser vaporization. Various alcohols (methanol, ethanol, n-propanol and 2-propanol) were consecutively added to the cluster beam in a pulsed jet and allowed to react to an extent of conversion of approximately 50%. The charged reaction products were subsequently measured using time of flight mass spectrometry. Two distinct reaction pathways were observed, involving complete dehydrogenation or OH abstraction from the alcohol molecule. The relative total reaction yield was found to not vary significantly within the cluster size regime studied. The branching ratios for the reaction demonstrated a cluster-size dependence, with a minimum of OH abstraction occurring for Ta7+.",

keywords = "Cluster reactivity, Dehydrogenation, Metal cluster cations, OH abstraction, TOFMS, Tantalum",

author = "K. Lange and B. Visser and D. Neuwirth and Eckhard, {J. F.} and U. Boesl and M. Tschurl and Bowen, {K. H.} and U. Heiz",

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T1 - Size-dependent gas phase reactivity of tantalum cluster cations with small alcohols

AU - Lange, K.

AU - Visser, B.

AU - Neuwirth, D.

AU - Eckhard, J. F.

AU - Boesl, U.

AU - Tschurl, M.

AU - Bowen, K. H.

AU - Heiz, U.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Small tantalum cluster cations (Ta4-9+) were produced in the gas phase by laser vaporization. Various alcohols (methanol, ethanol, n-propanol and 2-propanol) were consecutively added to the cluster beam in a pulsed jet and allowed to react to an extent of conversion of approximately 50%. The charged reaction products were subsequently measured using time of flight mass spectrometry. Two distinct reaction pathways were observed, involving complete dehydrogenation or OH abstraction from the alcohol molecule. The relative total reaction yield was found to not vary significantly within the cluster size regime studied. The branching ratios for the reaction demonstrated a cluster-size dependence, with a minimum of OH abstraction occurring for Ta7+.

AB - Small tantalum cluster cations (Ta4-9+) were produced in the gas phase by laser vaporization. Various alcohols (methanol, ethanol, n-propanol and 2-propanol) were consecutively added to the cluster beam in a pulsed jet and allowed to react to an extent of conversion of approximately 50%. The charged reaction products were subsequently measured using time of flight mass spectrometry. Two distinct reaction pathways were observed, involving complete dehydrogenation or OH abstraction from the alcohol molecule. The relative total reaction yield was found to not vary significantly within the cluster size regime studied. The branching ratios for the reaction demonstrated a cluster-size dependence, with a minimum of OH abstraction occurring for Ta7+.

KW - Cluster reactivity

KW - Dehydrogenation

KW - Metal cluster cations

KW - OH abstraction

KW - TOFMS

KW - Tantalum

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U2 - 10.1016/j.ijms.2014.10.010

DO - 10.1016/j.ijms.2014.10.010

M3 - Article

AN - SCOPUS:84911384313

SN - 1387-3806

VL - 375

SP - 9

EP - 13

JO - International Journal of Mass Spectrometry

JF - International Journal of Mass Spectrometry

ER -

Size-dependent gas phase reactivity of tantalum cluster cations with small alcohols

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Keywords

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