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 journalArticle

6 Citations (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 languageEnglish
Pages (from-to)319-324
Number of pages6
JournalSurface Science
Volume502-503
DOIs
Publication statusPublished - Apr 10 2002
Externally publishedYes

Fingerprint

Zeolites
Infrared lasers
molecular relaxation
infrared lasers
Stretching
Desorption
desorption
Infrared radiation
bleaching
Bleaching
Hydroxyl Radical
Relaxation time
Absorption spectra
relaxation time
Pumps
pumps
absorption spectra
probes
profiles
excitation

All Science Journal Classification (ASJC) codes

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

Cite this

Realtime observation of the desorption process of isobutene from zeolite using picosecond infrared lasers. / Onda, Ken; Wada, Akihide; Domen, Kazunari; Hirose, Chiaki.

In: Surface Science, Vol. 502-503, 10.04.2002, p. 319-324.

Research output: Contribution to journalArticle

Onda, Ken ; Wada, Akihide ; Domen, Kazunari ; Hirose, Chiaki. / Realtime observation of the desorption process of isobutene from zeolite using picosecond infrared lasers. In: Surface Science. 2002 ; Vol. 502-503. pp. 319-324.
@article{603219dff27348078387d18447001b25,
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",
year = "2002",
month = "4",
day = "10",
doi = "10.1016/S0039-6028(01)01970-7",
language = "English",
volume = "502-503",
pages = "319--324",
journal = "Surface Science",
issn = "0039-6028",
publisher = "Elsevier",

}

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

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.

UR - http://www.scopus.com/inward/record.url?scp=0037051839&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037051839&partnerID=8YFLogxK

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

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

M3 - Article

AN - SCOPUS:0037051839

VL - 502-503

SP - 319

EP - 324

JO - Surface Science

JF - Surface Science

SN - 0039-6028

ER -