Results 21 to 30 of about 22,356 (181)
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The polyanionic compound Na3V2(PO4)3 (NVP) has emerged as a competitive cathode material for sodium‐ion batteries (SIBs), owing to its high‐voltage redox activity (3.4 V vs. the Na+/Na reference couple) and NASICON‐type framework that enables superior ionic conductivity.
Xiaolei Wu +5 more
wiley +1 more source
Gongye shui chuli, 2011 以某铜矿山酸性废水为处理对象,综合运用Zeta电位、粒度分析等方法对助凝助沉剂加速絮凝物沉淀的机理进行研究。试验结果表明,废水pH=8.0,阳离子型高分子絮凝剂PAM的投加量为1.6 mg/L,助凝助沉剂用量为2.5 g/L时,可以取得较好的絮凝沉淀效果,沉淀速度较快,沉淀物粒径较大。
刘甘霖 +4 more
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The similar physicochemical properties of alkali metal elements make the co‐enrichment and precise separation of Cs+ and Rb+ in complex brine systems highly challenging. Here, an all‐inorganic strategy is proposed, which achieves efficient enrichment and precise separation of Cs+ and Rb+ in high‐salt systems by constructing Sr2+/Ba2+‐based ...
Kang Li, Ruixin Ma, Shina Li
wiley +1 more source
, 2004 采用传统共沉淀法和加表面活性剂改进共沉淀法制备了两种超细Cu／ZnO／Al2O3催化剂，并应用XRD，TEM对催化剂的结构和形貌进行了表征，同时用流动固定床微型反应器在3．0MPa和体积空速7600h^-1下考察了其催化合成气合成甲醇的活性．结果表明，改进共沉淀法制备的超细Cu／ZnO／Al2O3催化剂具有比传统共沉淀法制备的催化剂更细的粒径和更高的催化活性 ...
常杰, 阴秀丽, 付严, 汪俊锋
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Gongye shui chuli, 2015 分别针对沉淀池进水、沉淀池中部水样、沉淀池出水开展了超滤中试试验,研究了在不同混凝沉淀段位耦合时超滤膜出水水质的变化情况以及超滤膜的污染特性。结果表明,对于浊度、CODMn、UV254等水质指标而言,不同段位混凝沉淀-超滤的耦合工艺对水质的净化作用基本相当。但从膜污染上看,耦合段位设置在沉淀池进水端时,超滤膜的污染非常严重;而设置在出水端则可明显减缓膜污染;将耦合段位设置在沉淀池中部时,膜污染速率虽略有升高但幅度不大,同时可以显著减小水厂的占地面积。
谢义忠 +8 more
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT This study introduces novel nonequiatomic TiZrCoCrMoCux (x = 0, 5, 10; at%) medium‐entropy alloys (MEAx) tailored for orthopedic implants, synergistically combining the biocompatibility of Ti‐based alloys, the wear resistance of CoCrMo alloys, and the antibacterial/osteogenic attributes of Cu. The alloy's microstructure, mechanical properties,
Hang Yu +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Enhancing the strength of 7000 series high‐strength Al alloys remains a critical challenge to meet the demands of increasingly demanding service environments. In this study, a novel approach is proposed for developing high‐performance Al alloys through a combination of powder mechanical alloying, powder press‐forming, rolling deformation, and ...
Peng‐Fei Ji +4 more
wiley +1 more source
, 2012 应用电化学方法研究了混价铁氢氧化物对磷的吸附/沉淀及主要环境因素的影响。结果表明,混价铁氢氧化物通过吸附/沉淀可将水溶性磷维持在较低水平,该吸附较好地符合Langmuir方程(R2=0.9742),混价铁氢氧化物对磷的最大吸附容量为56.8 mg/g;亚铁比例越高,单位铁的磷吸附/沉淀容量越高;混价铁氢氧化物氧化导致磷吸附容量降低;pH为中性时,混价铁氢氧化物的磷吸附容量最大,弱酸、弱碱性则不利于磷的吸附;钙离子可增加混价铁氢氧化物的磷吸附容量;硫离子则相反,原因是硫离子促进了三价铁还原及硫化亚铁的形成;
张雯, 李清曼, 阚丹, 孙静娴
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Effects of Extraction Tea Mass Concentration on Tea Sediment Formation in Green Tea Infusion(浸提茶叶质量浓度对绿茶茶汤沉淀形成的影响) [PDF]
Shipin kexue jishu xuebao, 2016 Effects of extraction tea mass concentration on the main chemical components content, reversible sediment amount and irreversible sediment amount of green tea infusion were investigated.
TANG Ping(唐平) +4 more
doaj +1 more source
Gongye shui chuli, 2002 在桥口油田污水改性处理工艺中，因产出污泥量过大，导致密闭处理系统内污泥堵塞严重，沉降效果变差。而在密闭处理流程前端串入平流沉淀池以后，污泥沉降前移，彻底解决了密闭流程污泥堵塞难题，整个系统处理效果显著提高。平流沉淀池具有沉降效率高、处理效果直观、结构简单、成本低等优点。沉淀池应采用双池串联设计布局，其结构要根据污水处理流量、杂质含量、沉降时间等参数合理设计，应达到两极沉降、高效适用的目的。同时，沉淀池要建有完善的排污系统 ...
滕庆勇, 姜学明, 叶俊
doaj