Results 21 to 30 of about 998,634 (170)
Twelve principles for successful governance of community‐based coastal marine restoration
Conservation Biology, EarlyView.Abstract Global agreements, such as the Global Biodiversity Framework, call for urgent, large‐scale action to halt biodiversity loss through a whole‐of‐society approach. Community‐based restoration can play a crucial role in achieving this goal, yet there remains limited understanding of what makes these projects effective and sustainable.
Michelle M. Holian +2 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2014 采用共沉淀结合乙醇超临界干燥方法，制备了不同铈锆比的CexZr1-xO2复合氧化物，采用浸渍法制备了负载Pd的催化剂，通过XRD、N2吸脱附、H2-TPR和静态储氧量测试等表征技术，考察了它们的结构性质、还原性能和储放氧性能，并将其应用于柴油机尾气可溶性有机物(SOF)的催化氧化反应中.结果表明，该铈锆复合氧化物具有圆柱形管状介孔结构，孔径分布范围较宽，具有较大的比表面积，因而有利于对SOF的吸附；锆的添加使铈锆复合氧化物体相氧向表面迁移的能力增强，进而提高了载体及其负载Pd催化剂的储氧量 ...
HANYuxi(韩玉惜) +1 more
doaj +1 more source
Facets of Crises: How Problem Indicators and Public Perceptions Affect Policy Change
Policy Studies Journal, EarlyView.ABSTRACT Crises are widely acknowledged as catalysts for policy change. Yet, our understanding of the policy effects of crises remains limited. Why do only some crises lead to major changes, while significant policy changes also occur during seemingly non‐crisis periods?
Constantin Kaplaner +6 more
wiley +1 more source
Dehydrogenation Thermodynamic and Kinetic Challenges of Mg‐Ni‐Based Alloy Hydrides
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Solid‐state hydrogen storage stands as a pivotal, safe, and efficient solution for the future hydrogen economy. Among diverse hydrogen storage systems, Mg‐Ni‐based alloy hydrides are recognized as cornerstone materials. However, their practical application is hindered by two core challenges: the high thermodynamic stability of the hydride ...
Jinglan He +6 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2009 过渡金属（Mn、Fe、Ni、Zn、Co）修饰对铜铈催化剂的催化性能有明显的影响.Fe和Co的修饰对铜铈催化剂的CO氧化活性有较明显的促进作用,在110 ℃时,CO的转化率即达到99%；尤其Co的修饰增加了铜铈催化剂上CO转化率为99%的温度‘窗口’宽度约30 ℃,而Mn、Ni和Zn的修饰对铜铈催化剂的CO氧化活性则有一定的抑制作用.但不同过渡金属修饰对铜铈催化剂的氧化选择性均有明显的提高.
LIUZhi-gang(刘志刚) +2 more
doaj +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Engineering of the catalyst interface and modulation of transition–metal d–band play critical roles in the electrocatalytic hydrogen evolution reaction (HER). Herein, a synthetic strategy is developed to fabricate nitrogen‐doped carbon nanotubes (N–CNTs)–supported Ni3Se4–CeO2 heterojunction catalysts through a facile chemical vapor deposition (
Zhiqiang Sun +10 more
wiley +1 more source
Effect of fuels on the nanosized ceria powder by combustion method(燃烧剂对燃烧法合成CeO2纳米粉体的影响)
Zhejiang Daxue xuebao. Lixue ban, 2009 通过燃料-硝酸盐低温燃烧法合成了纳米二氧化铈粉体.考察了新型燃烧剂甘油和甘露醇对二氧化铈纳米粉体的影响,通过TG-DTA对凝胶的分解特性进行了分析,并利用XRD、氮气吸脱附和SEM对粉体的性能进行了表征.结果表明：使用甘露醇制备的CeO2晶粒较小(10.1 nm),比表面积较大（87.1 m2 •g-1）.
WUHong-miao(吴红苗) +6 more
doaj +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He +13 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2013 着重研究了固定床催化条件下对二甲苯与γ-丁内酯连续流动反应的催化活性和选择性.在对几类不同固体酸催化剂考评的基础上，选择H-Beta分子筛为催化剂并考察了反应温度、氮气流量、液体进样量、催化剂的焙烧温度等因素对反应的影响以及催化剂的再生稳定性和导致催化剂失活的主要因素.实验结果表明，H-Beta分子筛对此反应有较高的催化活性和选择性，与γ-丁内酯有关的副反应可能是导致催化剂失活的主要因素，但是失活后的催化剂可直接在固定床中通入空气灼烧反复活化再生，避免了以往液体酸催化中催化剂的一次性使用问题 ...
BIANNi-ni(卞妮妮) +4 more
doaj +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Cross‐scale assembly of metal (sub) nanoparticles and/or single atoms into millimeter/nanostructured metal monolithic catalysts (Min‐SMCs) is highly appealing for sustainable water cleanup, due to energy‐efficient catalyst recyclability, high infrastructure compatibility, and low metal‐releasing risks.
Jia‐Cheng E. Yang +4 more
wiley +1 more source