关键词: 共吸附, CNDO／2法, 对甲苯磺酰胺, 1．4－丁炔二醇

Abstract: The coadsorption characteristics of para-toluene sulfamide and 1,4-butynediol atmercury electrode have been studied by means of electrocapillary curve,differential capacity curve,Stuart model and the SCFMO method(CNDO/2).The coadsorption is a physical adsorption occuringnaturally. Lateral and flat orientations in the two adsorbates close to their maximum adsorptionpotential were considered respectively.Unlike attractive interactions of their own,there was arepulsive interaction at their coadsorption layer.A preferred adsorption of 1,4-butynediol occurredWhen they were at the same volume concentration.