Results 11 to 20 of about 1,575,706 (129)

奇怪吸引子分片机理的讨论 [PDF]

open access: yes, 1994
用已经提出的二维平面映射的奇怪吸引子结构讨论了这类平面映射的奇怪吸引子分片的机理;给出了有关判据 ...
赵鸿, 刘曾荣
core   +2 more sources

Phase‐Boundary Electronic Coupling in CoP/NiCo‐LDH for High‐Efficiency Electrocatalysis and Energy Storage

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Developing electrode materials with high capacity and outstanding activity is essential for energy storage and conversion technologies. However, integrating multiple functions into a single material remains challenging. Herein, we synthesized a novel CoP@NiCo layered double hydroxide (CoP@NiCo‐LDH) nano‐electrode using hydrothermal and ...
Ruiyu Li   +9 more
wiley   +1 more source

湿法冶金MVR废水中溶解性有机溶剂和萃取剂的去除

open access: yesGongye shui chuli, 2021
研究了不同种类颗粒活性炭(GAC)对湿法冶金MVR废水中特定有机物的去除效果和去除机理。结果表明:相比于Fenton法以及硅胶、硅藻土、膨润土吸附法,颗粒活性炭吸附法对废水中特定有机物的去除率最高,超过90%。GAC对废水中特定有机物的吸附符合Freundlich模型,属于优惠吸附。其中,优适煤制GAC的吸附能力最大,饱和吸附量达到35.98 mg/g(以TOC计),在最佳工况下其对有机物的去除率超过95%。
李恺雄   +3 more
doaj   +2 more sources

Nanocellulose‐Based Aerogels for Adsorption Applications in Environmental Remediation: State of Art, Challenges, and Future Outlook

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT The escalating severity of global environmental pollution necessitates the development of sustainable and efficient adsorption materials. Nanocellulose (NC), sourced from the most abundant natural polymer on earth, has shown great potential in this field due to its renewability, biodegradability, and exceptional nanoscale properties.
Yaqian Yu   +5 more
wiley   +1 more source

腐殖酸对蒙脱石吸附镉离子的影响机理研究

open access: yesShuitu Baochi Xuebao, 2007
实验研究了腐殖酸存在下重金属元素镉(Cd2 )在蒙脱石表面的吸附过程,对比研究了两种不同腐殖酸对吸附机理的影响。结果表明,重金属离子在蒙脱石表面的吸附作用受介质pH的影响。加入腐殖酸后吸附产生滞后现象,蒙脱石先吸附腐殖酸,之后转变为腐殖酸和蒙脱石共同吸附Cd2 作用,吸附量较单独吸附过程更大。吸附机理与腐殖酸的投加量和投加方式有关。
郝红英, 何孟常, 林春野
doaj   +2 more sources

Review on CBM Desorption/Adsorption Mechanism

open access: yes, 2010
通过对国内外制约煤层气开发的因素和能源需求的分析,指出了研究煤层气的解吸吸附机理的意义。通过分析国内外解吸吸附机理的研究历史和现状,将煤层气的解吸吸附机理归纳综合为单分子层吸附和多分子层吸附两大类;将煤层气的解吸吸附机理模型归纳为五类,即Lang-muir等温吸附及其扩展模型、BET多分子层吸附模型、吸附势理论模型、吸附溶液模型和实验数据拟合分析模型等。对影响煤层气解吸吸附的因素,如煤层的性质、孔隙性结构、煤层气的组分、压力条件和温度条件等进行了详细的分析说明指出 ...
方虹斌   +3 more
core   +2 more sources

Mesoporous Hexametallic High‐Entropy Alloy Nanotubes With Multicomponent Electronic Modulation for Efficient Bifunctional Catalysis

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Platinum‐based electrocatalysts are fundamentally constrained by strong oxygen binding, which restricts the oxygen reduction reaction (ORR) kinetics, and by severe CO poisoning, which hinders the methanol oxidation reaction (MOR). To address these limitations, we synthesized PdPtRuIrRhNi high‐entropy alloy (HEA) mesoporous nanotubes that ...
Hong Pan   +6 more
wiley   +1 more source

Insights Into the Temperature‐Dependent Oxidation Mechanism of Metallic Cerium in H2O‐N2 Atmospheres

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Metallic cerium (Ce), a widely used surrogate for actinide metals, enables mechanistic studies of reactions in complex gas environments under controlled and safer laboratory conditions. Here, the oxidation behavior of Ce in H2O‐N2 mixed atmospheres was investigated from 200°C to 350°C using in situ thermogravimetry–mass spectrometry, in situ X‐
Kun Huang   +10 more
wiley   +1 more source

水下吸声机理与吸声材料 [PDF]

open access: yes, 2017
随着我国加速实施海洋强国战略,对先进水下吸声材料的需求日益迫切.与空气吸声不同,水下的高静水压力和复杂的海洋环境对水下吸声材料提出了更为苛刻的要求.吸声问题的本质是如何将弹性能高效地转化为热能或其他形式能量.本文综述了主要以聚合物分子内摩擦机制及界面耗能机制为基础的传统水下吸声材料.传统水下吸声材料面临的主要是其在低频及高静水压力下吸声性能差的问题.这是因为:一方面受质量密度定律的限制,有限厚度的水下吸声材料无法有效吸收水中传来的低频声波;另一方面,在高静水压力下,弹性材料如高分子聚合物会变“硬 ...
蒙丹   +6 more
core   +2 more sources

Copper Slag‐Derived Cu3Fe17@C Alloy Enabling Efficient Peroxymonosulfate Activation for Levofloxacin Degradation via Cu‐Mediated Electron Transfer With Suppressed Metal Leaching

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Although alloy‐based materials present potential for peroxymonosulfate (PMS) activation, metal ion leaching remains severely restricted during the pollution degradation process. Herein, the porous carbon‐supported Fe–Cu alloy derived from industrial copper slag was prepared to remove the organic pollutants from wastewater while inhibiting the ...
Xuanren Chen   +10 more
wiley   +1 more source

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