个人简介

B.S., New Mexico State University 1972 M.S., New Mexico State University 1977 Ph.D., New Mexico State University 1990

研究领域

Analytical Chemistry

Dr. Lara’s research involves the chemistry of natural and synthetic phyllosilicates with an emphasis on clays. Phyllosilicates can be chemically altered (tailored clays) to make them have permanent pore sizes of dimensions that make them useful for selective adsorption. These clays have large internal surfaces with chemical properties that are very distinct from the chemical properties of the external surfaces. A main research interest is to differentiate between heterogeneous phase interactions of gases or liquids with these two different types of sites on the clays. Interactions at the solid surface areas are being characterized for molecules of various sizes and with different polarities and functional groups. The chemical altering of clays is accomplished principally by cation-exchange. Ultimately, clays can be synthesized with catalytic properties for many types of chemical reactions, including syntheses rearrangements, decompositions, and substitutions. These adsorbent materials have been used for both cation and anion extraction from aqueous solutions, for particulate and PAH adsorption from the effluent of incineration processes, and for difficult resolutions of racemic mixturees.

近期论文

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Selective catalytic reduction of nitrogen oxides with ammonia over copper modified layered clays: Characterization and reaction mechanism”,Corral-Avitia AY, Lara AS,Abstacts of Papers of The American Chemical Society, v. 224(pt. 1) pp. U419-U419 Aug 18, 2002 “Mechanisms and Capacities of Adsorption by Modified Clays,”A.S. Lara,International Journal of Environmentally Conscious Design and Manufacturing, 4, 47-52 (1995). “Gas Chromatographic Properties of Organoammonium Exchanged Montmorillonites. I. Tetraalkylammonium Cations,”G.A. Eiceman, A.S. Lara,Journal of Chromatography, 549, 273-281 (1991). “Gas Chromatographic Retention Properties of Organoammonium Exchanged Montmorillonites. II. CH3N+H3, (CH3)4N+, (CH3)3H+CH2C6H5 and 1,4-diazabicyclo[2.2.2]octane . 2H+,”A.S. Lara, G.A. Eiceman,Journal of Chromatography, 549, 283-295 (1991).