搜索结果: 1-15 共查到“知识库 催化剂工程”相关记录1002条 . 查询时间(1.859 秒)
主要进行异丙醇铝水解制备高纯拟薄水铝石和高纯多孔γ-Al2O3的研究.合成路线以异丙醇铝为原料,改变反应过程中水化液组成、水化温度和水化时间,制备一系列拟薄水铝石及其焙烧产物多孔γ-Al2 O3.结果表明,水化液中异丙醇的存在会抑制无定型氢氧化铝的晶化,但也有助于形成大孔径、高比表面和大孔容的氧化铝;纯水体系下,60℃以下水化会出现三水铝石,60℃以上水化的产物则为拟薄水铝石;γ-Al2 O3孔结...
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为优化尿素水解制氨工艺中水解反应的反应速率,本文针对几种常用的尿素水解催化剂,在间歇反应系统和中试试验台上进行对比试验。结果表明:添加磷酸氢二铵或氧化铝均比无催化剂时的尿素分解率高,水解反应活化能依次为:73.6 kJ/mol、65.3 kJ/mol、52.9 kJ/mol,添加催化剂有效降低了水解反应活化能,提高了尿素的分解速率,且催化水解气相产物的各组分体积浓度与无催化时的结果一致;在140℃...
郭新闻论文成果:Organic acid-assisted preparation of highly dispersed Co/ZrO2 catalysts with superior activity for CO2 methanation
CO2 methanation Cobalt catalyst ZrO2 Organic acid High dispersion
2023/3/6
Various organic acids were investigated for preparing the highly dispersed cobalt catalysts on zirconia support, Co/ZrO2, by an acid-assisted incipient wetness impregnation. The organic acid-assisted ...
郭新闻论文成果:Self-Assembly of Mn(II)-Annidoximated PAN Polymeric Beads Complex as Reusable Catalysts for Efficient and Stable Heterogeneous Electro-Fenton Oxidation
heterogeneous electro-Fenton porous polymeric frameworks phase inversion postsynthetic grafting strong metal-support interaction
2023/3/6
A facile postsynthetic amidoxime modification method was reported on the preparation of transition-metal ions (Mn, Fe, and Co)-polyacrylonitrile (PAN) polymeric beads complex as reusable catalysts for...
郭新闻论文成果:A combined experimental and DFT study of H2O effect on In2O3/ZrO2 catalyst for CO2 hydrogenation to methanol
CO2 hydrogenation Methanol In2O3/ZrO2 catalyst Water effect Oxygen vacancies Density functional theory (DFT) Reaction mechanisms
2023/3/6
CO2 hydrogenation with renewable energy is one of the promising approaches to mitigate CO2 emissions and produce sustainable chemicals and fuels. The effect of adding H2O in the feed gas on the activi...
郭新闻论文成果:Computational and experimental identification of strong synergy of the Fe/ZnO catalyst in promoting acetic acid synthesis from CH4 and CO2
郭新闻 期刊论文 DFT Fe/ZnO
2023/3/6
DFT calculations have identified reaction pathways for acetic acid synthesis from CO2 and CH4 on ZnO, Cu/ZnO and Fe/ZnO surfaces. Fe/ZnO exhibits strong synergy in facilitating CH4 activation, dissoci...
采用水热合成法制备大晶粒ZSM-5分子筛.通过调节碱处理过程中碱种类和处理时间得到一系列多级孔ZSM-5催化剂,考察了催化剂在甲苯与甲醇择形烷基化反应中的催化性能,及不同孔结构对甲苯转化率和对二甲苯选择性的影响.结果 表明,采用0.2 mol/L四丙基氢氧化铵(TPAOH)溶液在65℃处理30 min得到的催化剂的反应性能优于其他处理方法得到的ZSM-5催化剂.该催化剂在未经后续改性的前提下连续运...
郭新闻论文成果:Defect-Enriched N,O-Codoped Nanodiamond/Carbon Nanotube Catalysts for Styrene Production via Dehydrogenation of Ethylbenzene
nanodiamond/carbon nanotube hybrid nitrogen and oxygen codoping structural defect direct dehydrogenation styrene production
2023/3/6
Owing to the unique structure and enriched surface ketonic carbonyl group, nanodiamond (ND) shows excellent catalytic performance for dehydrogenation reaction. However, the agglomeration of predispers...
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Cu-Fe催化剂催化CO2常压加氢制长链烯烃(图)
Cu-Fe催化剂 CO2常压加氢 长链烯烃
2022/5/20
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Sn-Bi双金属催化剂高效电催化CO2制甲酸盐(图)
Sn-Bi 双金属催化剂 电催化CO2 甲酸盐
2022/5/20
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中国科学院宁波材料技术与工程研究所提出多组元析氢催化剂的高通量筛选方法(图)
多组元 析氢催化剂 高通量筛选 磁性催化剂
2022/4/18
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课题组基于MOFs材料构建“多核壳催化剂”,由ZIF-67@MIL-68(In)诱导生成CDs/Co3O4/In2O3纳米管。研究发现,CDs(碳点)基催化剂在不添加牺牲剂TEOA(三乙醇胺)的条件下,光催化CO2还原性能优于吡啶钌基催化剂。在这一体系中,碳点可以有效替代贵金属催化剂取得良好的光催化性能。此项研究得到了江苏省优秀青年基金,国家自然科学基金的支持。
碘氧化铋光催化剂的合成、改性及净化一氧化氮
碘氧化铋 一氧化氮 光催化 大气污染
2021/12/20