CAJ | 학술논문

分析与探讨了粉石英的表面位及其质子化反应，对粉石英的表面电化学性质作了进一步研究。以NaNO3为支持电解质，测得粉石英的表面位密度约为4.3个/nm2，表面零质子电荷原点pHPPZC为2.8；表面质子化本征常数lgKint1约为-1.5和lgKint2约为7.0；Cl-和NO-3对石英的竞争吸附能力大小为Cl->NO-3。粉石英表面显弱酸性。
분석여탐토료분석영적표면위급기질자화반응，대분석영적표면전화학성질작료진일보연구。이NaNO3위지지전해질，측득분석영적표면위밀도약위4.3개/nm2，표면령질자전하원점pHPPZC위2.8；표면질자화본정상수lgKint1약위-1.5화lgKint2약위7.0；Cl-화NO-3대석영적경쟁흡부능력대소위Cl->NO-3。분석영표면현약산성。
The surface sites of tripoli (α-quartz) and its protonation arefirst analyzed and discussed, and then the surface electrochemical properties of tripoli are further investigated. The surface site density and the pHPPZC(pristine of zero charge) of tripoli (α-quartz) were determined in supporting electrolyte solution of NaNO3 to 4.3 sites/nm2,2.8,respectively.The lgKint1 and lgKint2， two surface protonation intrinsic constants of tripoli,are about -1.5, 7.0, respectively. The competing adsorption ability of Cl- and NO-3 ions on quartz surface in sequence was Cl->NO-3.The results show that the surface of tripoli is characteristic of weak acidity.