Realtime observation of the desorption process of isobutene from zeolite using picosecond infrared lasers

Ken Onda; Akihide Wada; Kazunari Domen; Chiaki Hirose

doi:10.1016/S0039-6028(01)01970-7

Realtime observation of the desorption process of isobutene from zeolite using picosecond infrared lasers

Ken Onda, Akihide Wada, Kazunari Domen, Chiaki Hirose

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The transient absorption spectra of OD stretching mode of isobutene-adsorbed hydroxyl groups of DM20 zeolite were measured by picosecond infrared-infrared pump-probe experiment. The vibrational relaxation time (T₁) of the ν = 1 state was estimated to be 12±2 ps from the temporal profile of the bleaching and hot bands of the OD stretching mode. We found a band indicating the production of a short-lived species at 40 ps after excitation. Moreover we observed the course of isobutene-desorption in the time region from 40 to 100 ps. This result implies that this desorption does not occur immediately but occurs after local vibrational relaxation.

Original language	English
Pages (from-to)	319-324
Number of pages	6
Journal	Surface Science
Volume	502-503
DOIs	https://doi.org/10.1016/S0039-6028(01)01970-7
Publication status	Published - Apr 10 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0039-6028(01)01970-7

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title = "Realtime observation of the desorption process of isobutene from zeolite using picosecond infrared lasers",

abstract = "The transient absorption spectra of OD stretching mode of isobutene-adsorbed hydroxyl groups of DM20 zeolite were measured by picosecond infrared-infrared pump-probe experiment. The vibrational relaxation time (T1) of the ν = 1 state was estimated to be 12±2 ps from the temporal profile of the bleaching and hot bands of the OD stretching mode. We found a band indicating the production of a short-lived species at 40 ps after excitation. Moreover we observed the course of isobutene-desorption in the time region from 40 to 100 ps. This result implies that this desorption does not occur immediately but occurs after local vibrational relaxation.",

author = "Ken Onda and Akihide Wada and Kazunari Domen and Chiaki Hirose",

note = "Funding Information: This study was supported by a grant-in-aid for Scientific Research (C) (no. 12640488) from the Japanese Ministry of Education, Science, Sports and Culture.",

year = "2002",

month = apr,

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doi = "10.1016/S0039-6028(01)01970-7",

language = "English",

volume = "502-503",

pages = "319--324",

journal = "Surface Science",

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TY - JOUR

T1 - Realtime observation of the desorption process of isobutene from zeolite using picosecond infrared lasers

AU - Onda, Ken

AU - Wada, Akihide

AU - Domen, Kazunari

AU - Hirose, Chiaki

N1 - Funding Information: This study was supported by a grant-in-aid for Scientific Research (C) (no. 12640488) from the Japanese Ministry of Education, Science, Sports and Culture.

PY - 2002/4/10

Y1 - 2002/4/10

N2 - The transient absorption spectra of OD stretching mode of isobutene-adsorbed hydroxyl groups of DM20 zeolite were measured by picosecond infrared-infrared pump-probe experiment. The vibrational relaxation time (T1) of the ν = 1 state was estimated to be 12±2 ps from the temporal profile of the bleaching and hot bands of the OD stretching mode. We found a band indicating the production of a short-lived species at 40 ps after excitation. Moreover we observed the course of isobutene-desorption in the time region from 40 to 100 ps. This result implies that this desorption does not occur immediately but occurs after local vibrational relaxation.

AB - The transient absorption spectra of OD stretching mode of isobutene-adsorbed hydroxyl groups of DM20 zeolite were measured by picosecond infrared-infrared pump-probe experiment. The vibrational relaxation time (T1) of the ν = 1 state was estimated to be 12±2 ps from the temporal profile of the bleaching and hot bands of the OD stretching mode. We found a band indicating the production of a short-lived species at 40 ps after excitation. Moreover we observed the course of isobutene-desorption in the time region from 40 to 100 ps. This result implies that this desorption does not occur immediately but occurs after local vibrational relaxation.

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U2 - 10.1016/S0039-6028(01)01970-7

DO - 10.1016/S0039-6028(01)01970-7

M3 - Article

AN - SCOPUS:0037051839

SN - 0039-6028

VL - 502-503

SP - 319

EP - 324

JO - Surface Science

JF - Surface Science

ER -

Realtime observation of the desorption process of isobutene from zeolite using picosecond infrared lasers

Abstract

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