Results 101 to 110 of about 1,550,721 (197)
ABSTRACT Sb2S3 is regarded as a promising anode for sodium‐ion batteries (SIBs) because of its high theoretical capacity and moderate working potential. However, it suffers from huge volume changes, poor conductivity, and excessive side reactions, leading to severe capacity decay and a low initial Coulombic efficiency (ICE), thus limiting its practical
Jia‐Hao Zhao +6 more
wiley +1 more source
丹参活血化瘀活性成分主要有丹参素、迷迭香酸、丹参酮等化合物,这些化合物具有某些共同的化学结构特征.运用靶分子信息学平台,实现丹参共同化学结构特征与已知结构的蛋白质的结合能力的系统化研究,并进一步探索丹参活血作用的机理.结果表明,丹参活血化瘀活性成分主要通过调控人体内肾上腺素类激素的代谢网络,在一定程度上抑制肾上腺素类激素的分解代谢,形成积累,从而对心血管疾病具有治疗效果.丹参活血化瘀活性成分的主要靶标是苯乙醇胺N-甲基转移酶、儿茶酚O ...
徐峻 +4 more
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ABSTRACT In this study, we developed a novel photothermal fluidized bed (PTFB) for the fabrication of Pd‐CeO2‐TiO2 nanoparticles modified on 13X molecular sieves (PCT@13X). 13X powder impregnated with hydroxides and H2O2 was used as the precursor for PTFB preparation.
Liangzhuan Wu +7 more
wiley +1 more source
一种合成气中金属羰基化合物的净化方法是采用活性炭,特别是果壳炭的活性炭作净化剂,于净化温度0~200℃,合成气空速≤5000h-1,合成气压力0.01~20MPa的条件下对合成气中金属羰基化合物进行有效的消除。为提高净化剂的活性,可对活性炭进行酸,碱或酸碱进行预处理。该工艺方法对合成气中金属羰基化合物的脱除活性高,脱的干净,且工艺简单,操作方便,适于工业化采用 ...
周焕文 +3 more
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Overdischarge Induced Porous Graphite for Upcycling of Spent Lithium‐Ion Batteries
ABSTRACT The upcycling of spent lithium‐ion batteries (LIBs) into high‐performance materials offers both economic and environmental benefits. In this study, the principle of battery discharge‐induced copper dissolution and deposition is applied to fabricate a graphite/nanocopper composite anode.
Yadong Wang +13 more
wiley +1 more source
一种金属氧化物催化剂用于有机卤代芳烃污染物的催化燃烧消除,由载体和活性组分组成,载体选自Al2O3、SiO2、TiO2、ZrO2、CeO2之一种或几种,活性组分为变价的过渡金属元素M选自Cu、Mn、V、Ce、Fe、Mo、W、Zn、Ni、Co之一种或几种,担载量为0.1~30%wt。本发明催化活性高、抗卤中毒能力强,特别适于完全催化燃烧消除有机卤代芳烃污染物,尤其是芳香类有机卤代芳烃污染物 ...
孙秀萍 +5 more
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ABSTRACT The high‐value conversion of biomass platform molecules is a key pathway for substituting fossil resources with renewables and promoting sustainable green chemical manufacturing. However, conventional thermocatalytic processes suffer from harsh reaction conditions, high energy consumption, and poor selectivity, whereas photocatalysis enables ...
Tingting Dong +4 more
wiley +1 more source
以水中活性艳红X-3B为研究对象评价了自制掺硅TiO2纤维的光催化活性,结合TG-DSC、N2吸脱附、XRD及SEM等手段,探讨了制备过程中升温方式、活化温度及掺硅量等工艺条件对光催化活性的影响。结果表明:(1)采用分段程序升温工艺,前驱体经700℃水蒸气活化2 h,硅的摩尔分数为15%时制得的TiO2纤维光催化活性最佳,反应75 min后X-3B的降解率达99.3%,其降解过程分为脱色和矿化两个阶段;(2)掺硅可有效抑制TiO2的晶相转变及晶粒生长,提高热稳定性并改善表面织构 ...
包南 +5 more
doaj +2 more sources
一种复合金属催化剂,由载体和活性组份组成,活性组份占载体的重量百分比为0.5-30%;其中:载体为氧化硅、氧化铝、氧化锆、氧化钛、氧化镁的一种或一种以上的混合物;活性组份由铂与铁、钴、镍中的一种或一种以上构成二组、三组分或四组分,铂与铁、钴、镍的重量比为 8∶1-8∶1-8∶1-8。其制备方法为:将活性组分的金属前体溶解,按比例混匀后与载体混合,室温下搅拌,干燥后,还原性气氛下,于200-500℃下还原 2-10小时。本发明催化剂具有极好的活性和选择性,并且易于制备,价格相对较低,有很好的应用前景 ...
刘洪阳, 包信和, 马 丁
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