Results 11 to 20 of about 1,260,898 (152)
Gongye shui chuli, 2015 以Bi2O3 和MnCl2·4H2O为原料,利用水解法合成了Mn/BiOCl催化剂。用XRD、HRTEM等对其进行了表征。以苯酚作为光催化反应模型化合物,考察了Mn/BiOCl催化剂的紫外光催化活性。并评价了清除剂对催化剂紫外光催化活性的影响。结果表明:Mn的含量对Mn/BiOCl催化剂的光催化活性有很大影响。当n(Mn):n(Bi)为1:100时,所合成的Mn/BiOCl催化剂光催化活性最高,苯酚的光催化降解率达到70.3%。
崔玉民 +4 more
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Gongye shui chuli, 2014 催化湿式氧化（CWO）是一种有效处理难降解有机废水的新技术。催化剂是CWO技术的一个关键因素，碳材料催化剂是一种新型的催化剂。活性炭、碳纳米管及碳干凝胶在CWO处理中可直接做催化剂，也是一种良好的催化剂载体。炭材料催化剂在CWO处理中具有良好发展前景，全面介绍了炭材料催化剂在CWO中的应用。
阳立平 +4 more
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Gongye shui chuli, 2000 以耐火砖颗粒为载体,用浸涂法制备了负载型TiO2 光催化氧化剂,并设计了一种二相流化床光催化反应器。考察了固相催化剂制备过程中粘结剂的量、载体粒度及催化剂的表面处理方式等因素对催化剂的活性影响。结果表明,在流化床光催化反应器中,利用该方法制备的负载型TiO2 光催化氧化剂,对染料4BS 溶液的降解脱色反应具有很好的光催化活性及光催化效果的稳定性,为光催化技术的实际应用提供了有意义的尝试。
江立文 +3 more
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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
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Electrochemical carbon dioxide reduction reaction (CO2RR) powered by renewable electricity offers a sustainable route for producing value‐added carbonaceous chemicals. Herein, a three‐membrane electrolyzer was employed to directly co‐generate carbon monoxide (CO), chlorine (Cl2), and potassium carbonate (K2CO3) from the electrolysis of CO2 and
Shuai Wu +10 more
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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
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Photocatalytic H2 evolution coupled with biomass upgrading offers a sustainable route for clean energy conversion and high‐value chemical synthesis. Herein, an in situ grown S‐scheme MnS/MnB‐MBene heterojunction (denoted as SMx) was fabricated via alkaline etching of Mn2AlB2 followed by controlled sulfurization.
Pei Li +7 more
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Vanadium‐bearing solid wastes (VBSWs) have emerged as a key research priority in resource recovery and environmental remediation because of their high resource value, large generation volume, and complex phase composition. However, practical utilization of these wastes still faces major challenges, including heavy environmental burdens, ill ...
Bowen Duan +7 more
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Gongye shui chuli, 2018 磁性催化剂不仅催化活性高，还具有独特的磁响应性，在外加磁场作用下可以实现分离与回收。磁性催化剂可有效解决传统Fe2+催化剂回收困难、易产生二次污染等问题。综述了近年来的相关研究，重点讨论磁性Fenton催化剂的分类和合成方式，并介绍了其在Fenton和类Fenton体系中的催化性能。分析表明，磁性催化剂来源广泛、可再生、合成操作相对简便易行。未来研究应致力于拓展催化剂的pH适用范围、提高催化剂稳定性、开发新型负载材料。
张依含, 史静, 陈悦, 朱思怡
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Electrosynthesis of hydrogen peroxide (H2O2) via the two‐electron oxygen reduction reaction (2e−ORR) offers a sustainable and decentralized alternative to the anthraquinone process. However, conventional solo‐active‐site catalysts are intrinsically limited by scaling relationships, imposing a trade‐off between activity and selectivity.
Yiqi Ding +12 more
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