Fluorine substitution effect on the reaction pathways of CH3CH2(a) and CH3CH2(a) on Ag(111)
Article Abstract:
The temperature programmed reaction spectroscopy (TPRS) and reflection-absorption infrared spectroscopy (RAIRS) are employed to investigate the effect of fluorine substitution on the geometrical orientations and the reaction pathways of CH3CH2(a) and CF3CH2(a) on Ag(111). It was seen that the anchoring of CF3CH2(a) by both Ag-C and Ag...F interactions increases the activation energy of CF3CH2(a) migration compared to CH3CH2(a) migration and thus suppresses migratory coupling and facilitates beta-fluorine elimination.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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Imaging water dissociation on TiO2(110): Evidence for inequivalent geminate OH groups
Article Abstract:
A study imaged identical regions of partially reduced TiO2(11) surfaces with bridge-bonded oxygen vacancy ([BBO.sub.V]) concentrations of 10% ML using scanning tunneling microscopy (STM) before and after dosing H2O at ambient temperature (300 K). Hydrogen hopping along the [001] direction is observed at ambient temperature, with a strong preference for [OH.sub.B] (10x) hydrogen motion.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Photo dissociation at 193 nm of tert-butyl nitrite on Ag(111)
Article Abstract:
The surface photochemistry at 193 nm of tert-butyl nitrite on Ag(111) was investigated by REMPI-TOF and QMS-TOF for coverageEs of 1 SD, 40 SD, and 1 ML. The collisionless component, described using a Gausssian distribution had characteristic translation energy of 0.55 eV higher than for 351-nm but lower than for 248-nm photodissociation.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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