UV-visible absorption spectroscopy and photochemistry of an alkene center dot O-2 contact charge-transfer system in large NaY crystals

被引：29

作者：

Vasenkov, S ^{[1
]}

Frei, H ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CHEM BIODYNAM LAB,MS CALVIN LAB,BERKELEY,CA 94720

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 23期

关键词：

D O I：

10.1021/jp970006j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single layers of 40 mu m NaY crystals were prepared on a CaF2 support. These are sufficiently transparent to allow recording of reactants occluded in the zeolite pores by W-visible transmission spectroscopy for the first time. Spectra of 2,3-dimethyl-2-butene (DMB) and oxygen gas loaded into the zeolite revealed the true absorption profile of the DMB . O-2 charge-transfer contact complex. Visible-light-induced reaction was monitored by in situ Fourier transform infrared spectroscopy. Irradiation resulted in the same selective oxidation to 2,3-dimethyl-3-hydroperoxy-1-butene observed previously in highly scattering pellets of 1 mu m NaY particles.

引用

页码：4539 / 4543

页数：5

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