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| 1 | Controllable synthesis of argentum decorated CuO_(x)@CeO_(2) catalyst and its highly efficient performance for soot oxidation显示文摘In this paper,CuO_(x)@Ag/CeO_(2) catalysts were synthesized by simple wet-chemical method and equal volume impregnation method.The obtained catalysts were subjected to soot temperature programmed oxidation(soot-TPO)activity tests and were further characterized by various techniques such as X-ray diffraction(XRD),transmission electron microscopy/high-resolution transmission electron microscopy(TEM/HR-TEM),N_(2) physisorption,X-ray photoelectron spectroscopy(XPS)and H_(2)-temperature programmed reduction(H_(2)-TPR).The results show that CuO_(x)@Ag/CeO_(2) synthesized presents well controlled core-shell structures,with nano-cube like Cu_(2)O as the core and Ag decorated polycrystalline CeO_(2) grafting layers as the shell.Such core-shell structured CuO_(x)@Ag/CeO_(2) can successfully construct a secondary oxygen delivery channel(CuO_(x)→CeO_(2)→Ag)to effectively transfer bulk oxygen of the catalyst to the soot,resulting in its excellent soot oxidation activity compared to CuO_(x)@CeO_(2).The potential benefiting effect by Ag introduction over Cu@Ag/Ce can be concluded as:(ⅰ)pumping lattice oxygen and accelerating gaseous O_(2) dissociation to generate significantly increased active surface oxygen content;(ⅱ)modulating a moderate surface oxygen vacancies concentration to maintain more highly active O_(2) species. | Jie Wan Yanjun Liu Yuanyuan Zhou Han Liu Gongde Wu Jianfei Kan Min Li Duan Weng Xiaodong Wu | 2022 | Journal of Rare Earths2022，40，10： | 1 |
| 2 | Fluorine-modified mesoporous Mg--Al mixed oxides:mild and stable base catalysts for O-methylation of phenol with dimethyl carbonate 显示文摘 | Wu Gongde Wang Xiaoli Wei Wei | 2007 | Appl Catal A : Gen2007，329，： | 1 |
| 3 | Selective Oxi- dation of Benzyl Alcohol Catalyzed by Cr (Salen) Complexes Immobilized on MCM-41 显示文摘 | Wang Xiaoli Wu Gongde Li Junping | 2007 | JMol CatalA : Chem2007，276，： | 1 |
| 4 | Fluorine-modified mesoporous Mg–Al mixed oxides: Mild and stable base catalysts for O -methylation of phenol with dimethyl carbonate显示文摘 | Gongde Wu Xiaoli Wang Bing Chen Junping Li Ning Zhao Wei Wei Yuhan Sun | 2007 | Applied Catalysis A General2007，，： | 1 |
| 5 | A new route to synthesis of sulphonato-salen-chromium (Ⅲ) hydrotalcites:highly selective catalysts for oxidation of benzaldehyde显示文摘 | Wu Gongde Wang Xiaoli Li Junping | | 0，，1： | 1 |
| 6 | A new route to synthesis of sulphonato-salen-chromium(Ⅲ) hydrotalcites:Highly selective catalysts for oxidation of benzyl alcohol to benzaldehyde显示文摘 | Wu Gongde Wang Xiaoli Li Junping | 2008 | Catalysis Today2008，131，： | 1 |
| 7 | A new route to synthesis of sulphonato-salen-chromium ( Ⅲ ) hydrotalcites: highly selective catalysts for oxidation of benzaldehyde显示文摘 | Wu Gongde Wang Xiaoli Li Junping | 2008 | Catal Today2008，131，14： | 1 |
| 8 | Fluorine-modified mesoporous Mg-Al mixed oxides: mild and stable base catalysts for O-methylation of phenol with dimethyl carbonate 显示文摘 | WU Gongde WANG Xiaoli CHEN Bing | 2007 | Applied Catalysis A : General2007，329，： | 1 |
| 9 | Base-free selective oxidation of glycerol with 3% H2O2 catalyzed by sulphonato-salen-chromium(Ⅲ) intercalated LDH显示文摘 | Wang Xiaoli Wu Gongde Wang Fang | 2012 | Catal Commun2012，28，： | 1 |
| 10 | A New Route to Synthesis of Sulphonato- Salen- Chromium(M) Hydrotalcites: Highly Selective Catalysts for Oxidation of Benzaldehyde显示文摘 | Wu Gongde Wang Xiaoli Li Junping | 2008 | Catal Today2008，131，14： | 1 |
| 11 | Effect of Cu loading content on the catalytic performance of Cu-USY catalysts for selective catalytic reduction of NO with NH_(3)显示文摘Series of Cu-USY zeolite catalyst with different Cu loading content were synthesized through simple impregnation method.The obtained catalysts were subjected to selective catalytic reduction of NOxwith NH_(3)(NH_(3)-SCR) performance evaluation,structural/chemical characterizations such as X-ray diffraction (XRD),N2adsorption/desorption,H_(2)temperature-programmed reduction (H_(2)-TPR),NH_(3)temperature-programmed desorption (NH_(3)-TPD) as well as detailed in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments including CO adsorption,NH_(3)adsorption and NO+O_(2)in situ reactions.Results show that Cu-USY with proper Cu loading (in this work 5Cu-USY with5 wt.%Cu) could be promising candidates with highly efficient NH_(3)-SCR catalytic performance,relatively low byproduct formation and excellent hydrothermal stability,although its SO_(2)poisoning tolerability needs alleviation.Further characterizations reveal that such catalytic advantages can be attributed to both active cu species and surface acid centers evolution modulated by Cu loading.On one hand,Cu species in the super cages of zeolites increases with higher Cu content and being more conducive for NH_(3)-SCR reactivity.On the other hand,higher Cu loading leads to depletion of Br?nsted acid centers and simultaneous formation of abundant Lewis acid centers,which facilitates NH_(4)NO_(3)reduction via NH_(3)adsorbed on Lewis acid centers,thus improving SCR reactivity.However,Cu over-introduction leads to formation of surface highly dispersed CuOx,causing unfavorable NH_(3)oxidation and inferior N2selectivity. | Jie Wan Haipeng Yang Yijun Shi Yanjun Liu Jin Zhang Jun Zhang Gongde Wu Renxian Zhou | 2023 | Journal of Environmental Sciences2023，，4： | 0 |
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