鄂尔多斯中东部奥陶系古风化壳厚度一般不超过30m,古风化壳既有盖层——A 带,又有储集层——B 带和 C 带,并处于上、下古生界两套气源岩之间,构成了良好的成气组合。大量资料表明,古风化壳产层严格受岩性、古地貌、成岩作用等多种因素...鄂尔多斯中东部奥陶系古风化壳厚度一般不超过30m,古风化壳既有盖层——A 带,又有储集层——B 带和 C 带,并处于上、下古生界两套气源岩之间,构成了良好的成气组合。大量资料表明,古风化壳产层严格受岩性、古地貌、成岩作用等多种因素的控制,以古风化面为界,其下近20m 地层缝洞发育,储集性能良好,产气量较高。靖横、子洲、镇川堡三个古残丘是天然气富集的有利地带。展开更多
CeO2-based oxygen materials were prepared with co-precipitation method and characterized via Brunauer-Emmet Teller(BET)method,X-ray diffraction(XRD)and temperature-programmed reduction(H2-TPR).This paper revealed that...CeO2-based oxygen materials were prepared with co-precipitation method and characterized via Brunauer-Emmet Teller(BET)method,X-ray diffraction(XRD)and temperature-programmed reduction(H2-TPR).This paper revealed that three CeO2-based oxygen storage materials are all forming homogeneous solid solution.Among the samples,CeO2-ZrO2-Al2O3(CZA)has the best textural properties and excellent thermal stability.The specific surface area and pore volume of aged CZA are 90 m2/g and 0.29 mL/g.We proposed a viewpoint:Al3+ might insert among the interspace of fluorite structure or highly dispersal in solid solutions.展开更多
文摘CeO2-based oxygen materials were prepared with co-precipitation method and characterized via Brunauer-Emmet Teller(BET)method,X-ray diffraction(XRD)and temperature-programmed reduction(H2-TPR).This paper revealed that three CeO2-based oxygen storage materials are all forming homogeneous solid solution.Among the samples,CeO2-ZrO2-Al2O3(CZA)has the best textural properties and excellent thermal stability.The specific surface area and pore volume of aged CZA are 90 m2/g and 0.29 mL/g.We proposed a viewpoint:Al3+ might insert among the interspace of fluorite structure or highly dispersal in solid solutions.
