Heterojunction catalysts composed of transition metal sulfides exhibited excellent potentials in electrocatalytic water splitting.Herein,we have designed a FeS/Co_(3)S_(4)heterojunction catalyst for hydrogen evolution...Heterojunction catalysts composed of transition metal sulfides exhibited excellent potentials in electrocatalytic water splitting.Herein,we have designed a FeS/Co_(3)S_(4)heterojunction catalyst for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in alkaline water/seawater solution.Three-dimensional nanoarrays were grown on nickel foam,and the successful synthesis of heterojunction endowed excellent activity to the catalyst.In alkaline water/seawater solution,the low overpotentials(at current density of 10 mA/cm^(2))of HER were 120.3 and 135.6 mV and the low overpotentials of OER were 212 and 232 mV,respectively.This work provided an effective method for highly-efficiently electrocatalytic splitting of water via fabrication of heterojunction.展开更多
苍绎铁矿带会宝岭铁矿床为大型隐伏沉积变质岩型铁矿床,矿山涌水量大、排水成本高,且对矿山安全生产构成了威胁。治水前,矿山正常涌水量约530 m 3/h,其中已探明的封闭不良钻孔涌水量163.5 m 3/h,占矿山涌水的重要组成部分。本文针对封...苍绎铁矿带会宝岭铁矿床为大型隐伏沉积变质岩型铁矿床,矿山涌水量大、排水成本高,且对矿山安全生产构成了威胁。治水前,矿山正常涌水量约530 m 3/h,其中已探明的封闭不良钻孔涌水量163.5 m 3/h,占矿山涌水的重要组成部分。本文针对封闭不良钻孔的涌水量、水压、充水水源等特征进行分析,首次在深隐伏铁矿床中提出了孔底点注浆、分段泄压注浆、截水墙注浆止水3种井下注浆止水技术,建立了隐伏铁矿床封闭不良钻孔井下注浆止水体系,并取得了较好的止水效果,对类似矿山的封闭不良钻孔的止水工作具有重要指导意义。展开更多
浊沸石是准噶尔盆地二叠系砂砾岩储层常见的胶结物,成岩成储作用复杂。以玛湖凹陷东斜坡下乌尔禾组为例,分析岩心、铸体薄片资料,采用X线衍射、电子探针能谱及RT—DEN联合约束反演等方法,构建含浊沸石砂砾岩储层测井定量识别图版,优选...浊沸石是准噶尔盆地二叠系砂砾岩储层常见的胶结物,成岩成储作用复杂。以玛湖凹陷东斜坡下乌尔禾组为例,分析岩心、铸体薄片资料,采用X线衍射、电子探针能谱及RT—DEN联合约束反演等方法,构建含浊沸石砂砾岩储层测井定量识别图版,优选浊沸石溶孔砂砾岩储层油气富集区。结果表明:对于更靠近研究区湖盆中心的P 2 w 31油层,规模浊沸石溶孔储层的发育程度及油气富集条件更佳。含浊沸石砂砾岩储层预测标准为电阻率不小于20.0Ω·m,密度不大于2.46 g/cm^3,按照“垂向上,累计含浊沸石砂砾岩储层厚度大于6 m;平面上,单块面积大于40 km 2;含浊沸石砂砾岩储层厚度—主成藏期古鼻凸—通源断裂综合配置佳”的约束原则,P 2 w 31油层优选规模浊沸石溶孔油气富集区块4个、总面积201 km 2。其中,B、C区块为Ⅰ类潜在油气富集区;A区块西侧低井控区及D区块为Ⅱ类潜在油气富集区。该结果为玛湖凹陷斜坡区及其他盆地浊沸石溶孔储层定量预测提供借鉴。展开更多
基金supported by the Dean/Opening Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology(2023K001)Taishan Scholars Foundation of Shandong province(TSQN201909058).
文摘Heterojunction catalysts composed of transition metal sulfides exhibited excellent potentials in electrocatalytic water splitting.Herein,we have designed a FeS/Co_(3)S_(4)heterojunction catalyst for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in alkaline water/seawater solution.Three-dimensional nanoarrays were grown on nickel foam,and the successful synthesis of heterojunction endowed excellent activity to the catalyst.In alkaline water/seawater solution,the low overpotentials(at current density of 10 mA/cm^(2))of HER were 120.3 and 135.6 mV and the low overpotentials of OER were 212 and 232 mV,respectively.This work provided an effective method for highly-efficiently electrocatalytic splitting of water via fabrication of heterojunction.
文摘苍绎铁矿带会宝岭铁矿床为大型隐伏沉积变质岩型铁矿床,矿山涌水量大、排水成本高,且对矿山安全生产构成了威胁。治水前,矿山正常涌水量约530 m 3/h,其中已探明的封闭不良钻孔涌水量163.5 m 3/h,占矿山涌水的重要组成部分。本文针对封闭不良钻孔的涌水量、水压、充水水源等特征进行分析,首次在深隐伏铁矿床中提出了孔底点注浆、分段泄压注浆、截水墙注浆止水3种井下注浆止水技术,建立了隐伏铁矿床封闭不良钻孔井下注浆止水体系,并取得了较好的止水效果,对类似矿山的封闭不良钻孔的止水工作具有重要指导意义。
文摘浊沸石是准噶尔盆地二叠系砂砾岩储层常见的胶结物,成岩成储作用复杂。以玛湖凹陷东斜坡下乌尔禾组为例,分析岩心、铸体薄片资料,采用X线衍射、电子探针能谱及RT—DEN联合约束反演等方法,构建含浊沸石砂砾岩储层测井定量识别图版,优选浊沸石溶孔砂砾岩储层油气富集区。结果表明:对于更靠近研究区湖盆中心的P 2 w 31油层,规模浊沸石溶孔储层的发育程度及油气富集条件更佳。含浊沸石砂砾岩储层预测标准为电阻率不小于20.0Ω·m,密度不大于2.46 g/cm^3,按照“垂向上,累计含浊沸石砂砾岩储层厚度大于6 m;平面上,单块面积大于40 km 2;含浊沸石砂砾岩储层厚度—主成藏期古鼻凸—通源断裂综合配置佳”的约束原则,P 2 w 31油层优选规模浊沸石溶孔油气富集区块4个、总面积201 km 2。其中,B、C区块为Ⅰ类潜在油气富集区;A区块西侧低井控区及D区块为Ⅱ类潜在油气富集区。该结果为玛湖凹陷斜坡区及其他盆地浊沸石溶孔储层定量预测提供借鉴。
