Topic
Chemisorption
About: Chemisorption is a research topic. Over the lifetime, 16298 publications have been published within this topic receiving 554989 citations.
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TL;DR: In this paper, the authors explored the physicochemical and kinetics of the adsorption of a variety of sulfur-containing hydrocarbons onto Au(111) using helium beam reflectivity and temperature-programmed desorption (TPD) techniques.
Abstract: The energetics and kinetics of the adsorption of a variety of sulfur-containing hydrocarbons onto Au(111) have been explored using helium beam reflectivity and temperature-programmed desorption (TPD) techniques. Simple alkanethiols as well as dialkyl sulfides, dialkyl disulfides, and other sulfur-containing organics were found to adsorb with a low coverage physisorption enthalpy about 20% greater than the heat of vaporization in the bulk. In contrast to the dialkyl sulfides that only physisorb, alkanethiols and dialkyl disulfides also interact chemically with the gold with a chemisorption enthalpy of 126 kJ/mol that is independent of alkyl chain length. The presence of sterically hindering substituent groups on the carbon atom adjacent to the sulfur atom produces, however, a reduction in the chemisorption enthalpy of up to 15%. Temperature-programmed desorption of nonequilibrated, high exposure layers of alkanethiols with eight carbon atoms or longer displayed a second, higher energy, chemisorption peak a...
406 citations
TL;DR: A novel biochar supported nanoscale iron sulfide (FeS) composite (CMC-FeS@biochar) combining the advantages of biochar, carboxymethyl cellulose, and FeS was synthesized and tested for Cr(VI) removal efficiency and mechanisms as mentioned in this paper.
406 citations
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TL;DR: The electrical and gas sensing properties of chemically deposited zinc oxide (ZnO) films were investigated in this paper, where two activation energy values, 0.3 eV and 0.8 eV, were determined in the temperature range 300-400 K which are attributed to oxygen vacancy (VO) donor and heat of chemisorption of the O2− species.
404 citations
Book•
01 Jan 1974
TL;DR: In this paper, the basic principles of catalysis adsorption on solid surfaces and chemisorption at metal surfaces were discussed, as well as the kinetics of catalysed reactions.
Abstract: Basic principles of catalysis adsorption on solid surfaces chemisorption at metal surfaces chemisorption at oxide surfaces kinetics of catalysed reactions quantitative aspects of catalysis by metals heterogeneous catalysis: structure, preparation, and use catalysis in energy conversion and in the production of hydrocarbon feedstocks reactions on acidic solids and bifunctional catalysts: the petroleum industry oxidation catalysis: the petrochemical industry catalysis in the heavy inorganic chemicals industry hydrogenation of multiple bonds: the production of margarine, and the fine-chemicals industry catalysts in atmospheric pollution control prospects for the future Bibliography Index.
401 citations
TL;DR: The initial stages of the interaction of oxygen gas with a clean Ni (100) surface have been studied by a combination of LEED, AES, work function change and ion bombardment sectioning techniques as mentioned in this paper.
399 citations