ab initio quantum chemical methods and calculations;
acetylene;
physical adsorption;
sodium chloride;
D O I:
10.1016/S0039-6028(96)01189-2
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:
The quantum periodic Hartree-Fock study of acetylene adsorption on the NaCl(100) surface is carried out for three model structures, the admolecule being parallel or perpendicular to the surface. Two surface coverages (tau = 1/4 and 1) are investigated for these three adsorption sites. In the most favorable situation, the adsorption energy for the monolayer is calculated as 8.0 kcal mol(-1). The lateral interaction is extrapolated to 1.6 kcal mol(-1) by surface coverage analysis. These calculated results are in good agreement with the experiment values. The approaches are discussed and compared to a semi-classical study of acetylene adsorption on MgO(100). (C) 1997 Elsevier Science B.V.