Formation and coexistence of tricalcium silicate(C_3S)and calcium sulphoaluminate (C_4 A 3(S))minerals in Portland cemen......

Calcium phosphoaluminate solid solution (LHss) was the main phase of phosphoaluminate cement (PALC),which exhibited good......

用浸渍法改性α－Ａｌ２Ｏ３载体，并制成Ｎｉ／α－Ａｌ２Ｏ３催化剂。用动态热重法考察这些催化剂样品的还原性能和抗积炭性能，并用Ｘ－射线宽化法测定还原后的平均Ｎｉ晶粒......