麻烦帮我翻译下 谢谢了? Use of a pre-shaped medium is one of the ways to get high surface area and porous zirconia. The interaction of oxygen with zirconia matrix is less in the presence of sulphate than in the absence of sulphate. The amount of sulphate present regulates the crystallisation and phase transition in zirconia. The phase transition, from tetragonal to monoclinic, depends on crystallite sizes as well as on sulphur content in zirconia. The crystallisation of zirconia generates different surface sulphate species of varying energy. The covalency of the sulphate in crystalline zirconia is more than that in amorphous zirconia. The increase in covalency is not a function of nominal sulphate loading; rather it probably depends on the energy of the plane to which it is attached. In contrast to sulphuric acid, sulphation of zirconia with ammonium persulphate generates a sufficient number of both Lewis and Brönsted types of acidity. n-Butane transformation possibly depends on the Lewis as well as Brönsted acidity of the zirconia and a Lewis–Brönsted synergy is expected to prevail in the system during reaction. 高手谢谢了 帮帮我翻译下关于 催化剂 的查看更多2个回答 . 1人已关注