Results 31 to 40 of about 1,753,522 (129)
, 2018 我们研究了以镁铝水滑石作为载体，利用水滑石层间阴离子的可交换性，负载活性金属铂和锡的丙烷脱氢反应。在镁铝水滑石载体中加入Ga能够影响丙烷脱氢活性，当镓的含量为1％时催化剂丙烷脱氢反应活性最高，反应初始时，丙烷转化率为46．5％，反应2 h 后，丙烷转化率仍有37．5％。当以Mg（Ga）（Al）O-1％为载体时，考察了不同H2／C3H8摩尔比对丙烷脱氢活性的影响，结果表明当H2／C3H8摩尔比为0．5：1时，丙烷脱氢反应具有最佳的反应活性，即当在原料气中加入H2时，能够使得丙烷脱氢的转化率大幅度提升 ...
王晨光, 张客厅, 马隆龙, 张巧
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Layered double hydroxides (LDHs) are attractive non‐noble catalysts for overall water splitting (OWS), yet their hydrogen evolution reaction (HER) activity is often limited by suboptimal *H adsorption and a paucity of accessible sites. Herein, we introduce an oxygen‐vacancy (Ov) engineering strategy to construct ultrathin Ni‐Fe LDH nanosheets ...
Qi Liu +8 more
wiley +1 more source
Gongye shui chuli对污泥进行调理改性，提升污泥脱水性能是实现污泥妥善处置和资源化利用的重要前置条件。基于絮凝原理的调理技术效果显著，成本可控，是改善污泥脱水性能的最可靠和应用最广泛的技术之一。此外，絮凝联合调理技术能发挥协同作用，功能特性更加完备，是当下污泥脱水的研究热点。介绍了污泥处理处置现状及污泥脱水的技术难点，阐述了不同种类絮凝剂和絮凝联合调理技术的作用机理及应用效果，以期为利用絮凝调理技术强化污泥脱水性能提供理论依据和应用参考。
李杰 +7 more
doaj +2 more sources
Gongye shui chuli, 2022 生物电化学系统（BES）可增强体系的自养反硝化，刺激脱氮酶活性，对含氮废水的处理具有潜在优势，近年来已成为废水脱氮领域的研究热点。本研究基于氮素在废水中的循环，综合国内外相关文献，总结了BES的多途径协同脱氮机理及不同形式BES对含氮废水的处理效果，提出了将氮素离子的迁移与生物脱氮相结合的多种协同脱氮途径，分析了电极材料、运行参数及电流强度对BES脱氮性能的影响，并对BES在低C/N废水脱氮中的应用进行了分析。相比于传统生物脱氮，BES脱氮的优势主要体现在以下几个方面：减少了碳源投加量 ...
陈嘉瑾, 徐汉, 张志浩, 杨小丽
doaj +2 more sources
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
wiley +1 more source
Gongye shui chuli, 2019 污泥脱水是实现污泥减量化和资源化利用的关键步骤。研究了自制聚丙烯酸絮凝剂PR在低温热处理条件下对印染污泥脱水性能的影响，探究其脱水机理。结果表明，PR能显著改善污泥的脱水性能。最佳工艺条件：PR用量15 mg/g，硫酸用量0.002 mL/g，75℃下热处理30 min。处理后污泥比阻降至2.80×1012 m/kg，降低了98.80%，泥饼含水率降至84.59%，结合水含量降至28.27%。
郭曼曼, 张宾, 马立标, 柳荣展
doaj +2 more sources
Gongye shui chuli, 2015 研究了磁场调质对污水厂活性污泥脱水性能的影响,在不同磁场强度和磁化时间下,考察了活性污泥沉降性能、污泥比阻、分形维数、污泥粒径等参数的变化规律。结果表明:磁化时间为20 min、磁场强度为55 mT时,污泥的沉降性能最佳,污泥结构最为密实,污泥比阻可由原来的2.03×1013 m/kg下降到9.5×1012 m/kg,能有效改善污泥的脱水性能。
谢敏, 邓玉梅, 刘小波, 李好
doaj +2 more sources
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Photocatalytic molecular oxygen (O2) activation provides a sustainable approach to produce singlet oxygen (1O2) for organic contaminants detoxification. However, the charge carriers‐involved pathway usually suffers from unsatisfactory 1O2 production efficiency owing to energy loss caused by photogenerated hole‐mediated superoxide species (•O2−
Yan‐Biao Shi +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen +13 more
wiley +1 more source