Results 51 to 60 of about 4,880 (164)
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
I. Preparation of Au/TS-1 Catalysts by Ionic Liquid Enhanced Immobilization Method II. Gold Recovery from Aqueous Solution and Preparation of Au nanoflowers Based on Synergistic Action of Microorganism and Surfactant [PDF]
, 2015 1.考察了将离子液体分别引入沉积-沉淀法和生物还原法制备负载型金催化剂（Au/TS-1）的过程，并将所获催化剂用于H2、O2共存时的丙烯气相环氧化过程。沉积-沉淀法引入离子液体后，制备过程中离子液体的用量、体系的pH以及Au负载量均会影响所获催化剂的催化性能。离子液体的引入可以提高Au的有效负载量，并在一定程度上提高催化剂的催化性能，但Au负载量的提高是有限的，而且Au的有效利用率偏低。将离子液体引入生物还原法后，考察了制备过程中离子液体的种类、生物质的种类和生物质浓度的影响 ...
景孝廉
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Converting CO2 to CH4 under mild conditions is a promising strategy for solving environmental and energy problems, but also a challenge. In this work, the low‐temperature CO2 hydrogenation process over Ni/CeO2 catalysts was significantly accelerated by optimizing the H2 dissociation ability of Ni through the size effect, thus A‐Ni/CeO2 with an
Yu Xie +8 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2010 以对甲氧基苯酚、对苄氧基苯酚、对苯二酚和四乙二醇二磺酸酯这些简单化合物为原料,通过磺酸酯与酚的亲核取代反应及苄基保护、钯碳氢化去保护策略制备得到了4种新颖的苯并寡聚乙二氧链螺旋体化合物.
YEYu-yuan(叶余原) +5 more
doaj +1 more source
Optimizing CuO on 3D Ordered Macroporous CeO2 for CO Oxidation in Rich Hydrogen
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT CO preferential oxidation (CO‐PROX) in rich H2 is considered a feasible strategy to solve CO poisoning for fuel cells, but obtaining good activity at low temperatures is still a challenge. Herein, three‐dimensional ordered macroporous (3DOM) CuO/CeO2 catalysts were fabricated by a templating approach, with the metal–support interaction (MSI ...
Xiaohua Chen +7 more
wiley +1 more source
不同种植密度条件下两种穗型冬小麦品种根际土壤酶活性的动态变化
Shuitu Baochi Xuebao, 2007 在大田试验条件下，研究了2种穗型冬小麦品种在不同种植密度条件下根际土壤酶活性的动态变化。结果表明，随着生育时期的推进，两种穗型冬小麦品种根际土壤蛋白酶、过氧化氢酶和脲酶活性均呈先增高后降低的单峰曲线变化，拔节期和抽穗期活性较高，返青期和开花期活性则较低。不同种植密度条件下，豫麦49—198系根际土壤蛋白酶、脲酶活性均随密度增加呈先增高后降低的变化趋势，而过氧化氢酶活性表现不明显；兰考矮早八3种根际土壤酶活性随密度增加呈先降低后增高的变化趋势。不同密度水平下3种酶活性的方差分析表明，蛋白酶 ...
查菲娜 +5 more
doaj +2 more sources
Shuitu Baochi Xuebao, 2019 通过1年静态培养试验，研究了鱼骨粉对碱性和酸性Cd污染土壤钝化修复效应、基本理化性质和酶活性的影响。结果表明：随着鱼骨粉施加量的增加，酸性和碱性土壤中pH、有机质和阳离子交换量增加，而含水率则较对照降低了2.90%~6.19%和0.10%~1.81%。土壤中TCLP（toxicity characteristic leachingprocedure）提取态Cd含量随鱼骨粉投加量增加而降低，较对照最大分别降低49.7%和17.0%。施加鱼骨粉后，碱性土壤中过氧化氢酶活性显著升高 ...
纪艺凝, 徐应明, 王农, 孙约兵
doaj
In situ Laser Raman Spectroscopic Study on the Etching Processes of the Silicon [PDF]
, 1998 硅是应用最广泛研究最系统和深入的半导体材料，人们一直进行着不懈的 努力，以便从更深层次上认识硅的性质，进一步发掘其应用的潜力从而得到性 能更好的硅基微光电子器件和微电机械系统.由于硅表面的键合形式如Si: O，Si:H，Si:F)明显影响甚至决定了硅的一系列物理和化学性质以及随后对它 的加工工艺，因此，对硅表面结构和刻蚀过程的正确表征以及有选择性地控制表 面的键合形式成了认识硅和加工硅的关键.谱学技术(如IR，EELS，Raman光谱) 具有表征具体分子的能力，是研究半导体表面的重要手段 ...
刘峰名
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Low conductivity and poor oxygen reduction reaction (ORR) catalytic activity limit the bifunctional catalytic performance of layered double hydroxide (LDH) in zinc–air batteries. In this work, an efficient bifunctional electrocatalyst was prepared by loading nitrogen and phosphorus co‐doped carbon quantum dots (NPCQDs) onto a cationic‐vacancy ...
Wenhao Tang +4 more
wiley +1 more source