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⁺.

Originalsprache	Englisch
Seiten (von - bis)	9-13
Seitenumfang	5
Fachzeitschrift	International Journal of Mass Spectrometry
Jahrgang	375
DOIs	https://doi.org/10.1016/j.ijms.2014.10.010
Publikationsstatus	Veröffentlicht - 1 Jan. 2015

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10.1016/j.ijms.2014.10.010

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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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language = "English",

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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

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SN - 1387-3806

VL - 375

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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

Abstract

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