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| 1 | Adsorption behavior of phosphate on Lanthanum(Ⅲ) doped mesoporous silicates material显示文摘A series of lanthanum doped meosoporous MCM-41(LaxM41,x is Si/La molar ratio) was prepared by sol-gel method.The surface structure of the materials was investigated with X-ray diffraction and N2 adsorption/desorption technique.The content of La in the materials was determined by ICP.It was found that the La content of La25M41,La50M41 and La100M41 was 7.53%,3.89% and 2.32%,respectively.The phosphate adsorption capacities increased with increasing amount of La incorporation.With 0.40 g La25M41 99.7% phosphate could be removed.The effects of Si/La molar ratio,LaxM41 dose,pH,initial concentration of phosphate solution,co-ions on phosphate adsorption were also evaluated.The phosphate adsorption kinetics of LaxM41 could be well-described by the pseudo second-order model,and Langmuir isotherm fit equilibrium data much better than the Freundlich isotherm. | Jianda Zhang Zhemin Shen Wenpo Shan Ziyan Chen Zhijian Mei Yangming Lei Wenhua Wang | 2010 | Journal of Environmental Sciences2010，22，4： | 18 |
| 2 | Selective catalytic reduction of NO_(x) with NH_(3):opportunities and challenges of Cu-based small-pore zeolites显示文摘Zeolites,as efficient and stable catalysts,are widely used in the environmental catalysis field.Typically,Cu-SSZ-13 with small-pore structure shows excellent catalytic activity for selective catalytic reduction of NO_(x) with ammonia(NH_(3)-SCR)as well as high hydrothermal stability.This review summarizes major advances in Cu-SSZ-13 applied to the NH_(3)-SCR reaction,including the state of copper species,standard and fast SCR reaction mechanism,hydrothermal deactivation mechanism,poisoning resistance and synthetic methodology.The review gives a valuable summary of new insights into the matching between SCR catalyst design principles and the characteristics of Cu^(2+)-exchanged zeolitic catalysts,highlighting the significant opportunity presented by zeolite-based catalysts.Principles for designing zeolites with excellent NH_(3)-SCR performance and hydrothermal stability are proposed.On the basis of these principles,more hydrothermally stable Cu-AEI and Cu-LTA zeolites are elaborated as well as other alternative zeolites applied to NH_(3)-SCR.Finally,we call attention to the challenges facing Cu-based small-pore zeolites that still need to be addressed. | Yulong Shan Jinpeng Du Yan Zhang Wenpo Shan Xiaoyan Shi Yunbo Yu Runduo Zhang Xiangju Meng Feng-Shou Xiao Hong He | 2021 | National Science Review2021，8，10： | 9 |
| 3 | Investigation of suitable precursors for manganese oxide catalysts in ethyl acetate oxidation显示文摘The control of ethyl acetate emissions from fermentation and extraction processes in the pharmaceutical industry is of great importance to the environment.We have developed three Mn_(2)O_(3)catalysts by using different Mn precursors(MnCl_(2),Mn(CH_(3)COO)_(2),MnSO_(4)),named as Mn_(2)O_(3)-Cl,-Ac,-SO_(4).The tested catalytic activity results showed a sequence with Mn precursors as:Mn_(2)O_(3)-Cl>Mn_(2)O_(3)-Ac>Mn_(2)O_(3)-SO_(4).The Mn_(2)O_(3)-Cl catalyst reached a complete ethyl acetate conversion at 212℃(75℃lower than that of Mn_(2)O_(3)-SO_(4)),and this high activity 100%could be maintained high at 212℃for at least 100 hr.The characterization data about the physical properties of catalysts did not show an obvious correlation between the structure and morphology of Mn_(2)O_(3)catalysts and catalytic performance,neither was the surface area the determining factor for catalytic activity in the ethyl acetate oxidation.Here we firstly found there is a close linear relationship between the catalytic activity and the amount of lattice oxygen species in the ethyl acetate oxidation,indicating that lattice oxygen species were essential for excellent catalytic activity.Through H_(2)temperature-programmed reduction(H_(2)-TPR)results,we found that the lowest initial reduction temperature over the Mn_(2)O_(3)-Cl had stronger oxygen mobility,thus more oxygen species participated in the oxidation reaction,resulting in the highest catalytic performance.With convenient preparation,high efficiency,and stability,Mn_(2)O_(3)prepared with MnCl_(2)will be a promising catalyst for removing ethyl acetate in practical application. | Yan Zhang Meng Wang Shunyu Kang Tingting Pan Hua Deng Wenpo Shan Hong He | 2021 | Journal of Environmental Sciences2021，33，6： | 2 |
| 4 | Improving S/N ratio for pre-stack seismic data from western China显示文摘从西方的中国的地震数据是很吵闹的。二个主要原因是静态的修正和低 S/N 比率问题。由地震数据处理和学习,这些问题被重申有效地解决了静态的修正并且改进 S/N 比率为预先叠地震数据。许多其他的失真的抑制和消除也被实现了。由于 S/N 比率被改进的事实,地震数据的分辨率也被改进。 | Guo Ping Zhang Wenpo Gao Yan Zhao Jun Gao Shumei | 2007 | Applied Geophysics2007，4，3： | 2 |
| 5 | Influence of calcination temperature on iron titanate catalyst for the selective catalytic reduction of NO x with NH 3显示文摘 | Fudong Liu Kiyotaka Asakura Hong He Yongchun Liu Wenpo Shan Xiaoyan Shi Changbin Zhang | 2010 | Catalysis Today2010，，1： | 1 |
| 6 | Fuzzy Comprehensive Evaluation Method Applied in the Real Estate Investment Risks Research显示文摘 | Zhang ML(Zhang Minli) Yang Wp(Yang Wenpo) | 2012 | Physics Procedia2012，，： | 1 |
| 7 | Adsorption behav- ior of phosphate on lanthanum( Ill ) -coordinated diamino-func- tionalized 3D hybrid mesoporous silicates material 显示文摘 | Zhang Jianda Shen Zhemin Shan Wenpo | 2011 | Journal of Hazardous Materials2011，186，1： | 1 |
| 8 | Observational study of surface ozone at an urban site in East China显示文摘 | SHAN Wenpo Y1N Yongquan ZHANG Jindi | 2008 | Atmospheric Research2008，89，： | 1 |
| 9 | An approximation to the P-wave reflection coefficient for amplitude variation with long-offset seismic data显示文摘在最近的年里,长偏移量的探索广泛地被使用了,特别在海洋的地震调查上。常规 AVO 分析为长偏移量的地震数据是不够的。为了拓宽应用程序, AVO 分析变化,我们在场对长偏移量的数据适用的新 P 波浪思考系数近似。我们的结果类似于能被当作近似到我们短偏移量的地震数据的结果的众所周知的 Shuey 公式。 | Wang Pu Zhang Wenpo Hu Tianyue | 2007 | Applied Geophysics2007，4，1： | 1 |
| 10 | Advances in emission control of diesel vehicles in China显示文摘Diesel vehicles have caused serious environmental problems in China.Hence,the Chinese government has launched serious actions against air pollution and imposed more stringent regulations on diesel vehicle emissions in the latest China VI standard.To fulfill this stringent legislation,two major technical routes,including the exhaust gas recirculation(EGR)and high-efficiency selective catalytic reduction(SCR)routes,have been developed for diesel engines.Moreover,complicated aftertreatment technologies have also been developed,including use of a diesel oxidation catalyst(DOC)for controlling carbon monoxide(CO)and hydrocarbon(HC)emissions,diesel particulate filter(DPF)for particle mass(PM)emission control,SCR for the control of NOx emission,and an ammonia slip catalyst(ASC)for the control of unreacted NH3.Due to the stringent requirements of the China VI standard,the aftertreatment system needs to be more deeply integrated with the engine system.In the future,aftertreatment technologies will need further upgrades to fulfill the requirements of the near-zero emission target for diesel vehicles. | Guangyan Xu Wenpo Shan Yunbo Yu Yulong Shan Xiaodong Wu Ye Wu Shaojun Zhang Liqiang He Shijin Shuai Hailong Pang Xuefeng Jiang Heng Zhang Lei Guo Shufen Wang Feng-Shou Xiao Xiangju Meng Feng Wu Dongwei Yao Yan Ding Hang Yin Hong He | 2023 | Journal of Environmental Sciences2023，，1： | 1 |
| 11 | An environmentally-benign CeO 2 -TiO 2 catalyst for the selective catalytic reduction of NO x with NH 3 in simulated diesel exhaust显示文摘 | Wenpo Shan Fudong Liu Hong He Xiaoyan Shi Changbin Zhang | 2011 | Catalysis Today2011，，1： | 1 |
| 12 | An environmentally-benign CeO 2 -TiO 2 catalyst for the selective catalytic reduction of NO x with NH 3 in simulated diesel exhaust显示文摘 | Wenpo Shan Fudong Liu Hong He Xiaoyan Shi Changbin Zhang | 2011 | Catalysis Today2011，，1： | 1 |
| 13 | Improvement of low-temperature catalytic activity over hierarchical Fe-Beta catalysts for selective catalytic reduction of NO_x with NH_3显示文摘Hierarchical Fe-Beta obtained by hydrothermal synthesis exhibited higher low-temperature NH_3-SCR activity than conventional Fe-Beta. In order to identify the main factors leading to the difference in catalytic activity, we investigated the pore structure, acidity and Fe sites of the hierarchical Fe-Beta and conventional Fe-Beta. The enhanced activity of hierarchical Fe-Beta was mainly due to the increase of the quantity of active Fe species. NH_3-TPD and DRIFTS results of NH_3 adsorption clearly verified that hierarchical Fe-Beta had more Lewis acid sites, which is beneficial to the adsorption and activation of NH_3. The H_2-TPR, UV–vis DRS, and EPR results confirmed that the hierarchical Fe-Beta had more isolated active Fe species, which may be associated with that the hierarchical structure introduced more structural defects as ion-exchange sites. Based on the analysis of kinetics experiments and the abovementioned characterizations, it can be concluded that the improvement of NH_3-SCR activity was not due to an intrinsic effect of the specific structural characteristics, but was related to more Fe active sites and better dispersion of Fe species in the hierarchical Fe-Beta. | Na Zhu Zhihua Lian Yan Zhang Wenpo Shan Hong He | 2019 | Chinese Chemical Letters2019，30，4： | 1 |
| 14 | A superior Ce-W-Ti mixed oxide catalyst for the selective catalytic reduction of NO x with NH 3显示文摘 | Wenpo Shan Fudong Liu Hong He Xiaoyan Shi Changbin Zhang | 2011 | Applied Catalysis B, Environmental2011，，： | 1 |
| 15 | Observational study of surface ozone at an urban site in East China显示文摘 | SHAN Wenpo YIN Yongquan ZHANG Jianda | 2008 | Atmospheric Research2008，89，3： | 1 |
| 16 | Effects of impregnation sequence on the NH_(3)-SCR activity and hydrothermal stability of a Ce-Nb/SnO_(2) catalyst显示文摘Hydrothermal stability is crucial for the practical application of deNO_(x)catalyst on diesel vehicles,for the selective catalytic reduction of NO_(x)with NH_(3)(NH_(3)-SCR).SnO_(2)-based materials possess superior hydrothermal stability,which is attractive for the development of NH_(3)-SCR catalyst.In this work,a series of Ce-Nb/SnO_(2)catalysts,with Ce and Nb loading on SnO_(2)support,were prepared by impregnation method.It was found that,the NH_(3)-SCR activities and hydrothermal stabilities of the Ce-Nb/SnO_(2)catalysts significantly varied with the impregnation sequences,and the Ce-Nb(f)/SnO_(2) catalyst that firstly impregnated Nb and then impregnated Ce exhibited the best performance.The characterization results revealed that CeNb(f)/SnO_(2)possessed appropriate acidity and redox capability.Furthermore,the strong synergistic effect between Nb and Sn species stabilized the structure and maintained the dispersion of acid sites.This study may provide a new understanding for the effect of impregnation sequence on activity and hydrothermal stability and a new environmental-friendly NH_(3)-SCR catalyst with potential applications for NO_(x)removal from diesel and hydrogenfueled engines. | Ying Zhu Wenpo Shan Zhihua Lian Jingjing Liu Yan Zhang Hong He | 2024 | Journal of Environmental Sciences2024，，4： | 0 |
| 17 | Interface sites on vanadia-based catalysts are highly active for NO_(x) removal under realistic conditions显示文摘TiO_(2)-supported V_(2)O_(5)catalysts are commonly used in NO_(x)reduction with ammonia due to their robust catalytic performance.Over these catalysts,it is generally considered that the active species are mainly derived from the vanadia species rather than the intrinsic structure of V-O-Ti entities,namely the interface sites.To reveal the role of V-O-Ti entities in NH_(3)-SCR,herein,we prepared TiO_(2)/V_(2)O_(5)catalysts and demonstrated that V-O-Ti entities were more active for NO_(x)reduction under wet conditions than the V sites(V=O)working alone.On the V-O-Ti entities,kinetic measurements and first principles calculations revealed that NH_(3)activation exhibited a much lower energy barrier than that on V=O sites.Under wet conditions,the V-O-Ti interface significantly inhibited the transformation of V=O to V-OH sites thus benefiting NH_(3)activation.Under wet conditions,meanwhile,the migration of NH_(4)^(+)from Ti site neighboring the V-O-Ti interface to Ti site of the V-O-Ti interface was exothermic;thus,V-O-Ti entities together with neighboring Ti sites could serve as channels linking NH_(3)pool and active centers for activation of NH_(4)^(+).This finding reveals that the V-O-Ti interface sites on V-based catalysts play a crucial role in NO_(x)removal under realistic conditions,providing a new perspective on NH_(3)-SCR mechanism. | Zhihui Lv Guangzhi He Wenshuo Zhang Jingjing Liu Zhihua Lian Yang Yang Zidi Yan Guangyan Xu Wenpo Shan Yunbo Yu Hong He | 2024 | Journal of Environmental Sciences2024，，2： | 0 |
| 18 | Improving signal to noise ratio of seismic profiles using an image processing technique显示文摘这篇论文介绍把技术处理成作为一种噪音变细技术处理的地震数据的一幅图象。地震侧面的图象分离被基于不同时间剧降和一套相对单个剧降侧面使用栅栏操作员获得被获得。到噪音比率侧面的一个高信号能被统计 weighting 在重建期间获得。与进一步处理分析和地质的学习,到能满足地质的要求的噪音侧面的一个高信号能被生产。真实数据例子证明到 porfile 的噪音比率的信号极大地被改进,侧面的分辨率被维持,并且差错结束在使用处理方法的图象以后是清楚得多的。 | Zhang Wenpo Guo Ping Yang Zaichao Hu Tianyue | 2006 | Applied Geophysics2006，3，2： | 0 |
| 19 | Tuning SMSI to stabilize metallic Pd species:A case study on Pd/TiO_(2) for HCHO oxidation显示文摘Pretreatment of the carrier for supported catalysts can effectively improve the strong metal-support interaction(SMSI)and increase the dispersion of precious metals,which are critical to many important catalytic reactions.In this work,we tuned SMSI on Pd/TiO_(2)catalysts through inducing surface defects of TiO_(2)by pretreated with different atmospheres(H_(2)/N_(2),N_(2),O_(2)/N_(2))at the high temperature(800℃).Multiple characterization results illustrated that surface defects anchored Pd species and thus enhanced their dispersion.During reduction,Ti^(3+)species formed and transferred onto the metallic Pd species and then induced SMSI,which effectively stabilize Pd species in the metallic state.The stronger MSI,the more stability of Pd species.As a case,Pd/TiO_(2)–800H_(2),with strongest MSI,displayed the best HCHO oxidation performance at low temperature(10℃). | Chunying Wang Xiaofeng Liu Jingyi Wang Yaobin Li Shaohua Xie Fudong Liu Changbin Zhang Yuming Zheng Wenpo Shan Hong He | 2024 | Chinese Chemical Letters2024，35，3： | 0 |
| 20 | Influence of NO_(x) on the activity of Pd/θ-Al_(2)O_(3) catalyst for methane oxidation: Alleviation of transient deactivation显示文摘Alumina supported Pd catalyst(Pd/Al_(2)O_(3)) is active for complete oxidation of methane, while often suffers transient deactivation during the cold down process. Herein, heating and cooling cycle tests between 200 and 900 ℃ and isothermal experiments at 650 ℃ were conducted to investigate the influence of NO_(x) on transient deactivation of Pd/θ-Al_(2)O_(3) catalyst during the methane oxidation. It was found that the co-fed of NO alleviated transient deactivation in the cooling ramp from 800 to 500 ℃, which was resulted from the in situ formation of NO_(2) during the process of methane oxidation. Over the Pd/θ-Al_(2)O_(3), thermogravimetric analysis and O_(2) temperature programmed oxidation measurements confirmed that transient deactivation was due to the decomposition of Pd O particles and the hysteresis of Pd reoxidation, while the metal Pd entities were less active for methane oxidation than the Pd O ones. CO pulse chemisorption and scanning transmission electron microscopy characterizations rule out the NO_(2) effect on Pd size change. Powder X-ray diffraction and X-ray photoelectron spectroscopy characterizations were used to obtain palladium status of Pd/θ-Al_(2)O_(3) before and after reactions, indicating that in lean conditions at 650 ℃, the presence of NO_(2) increases the content of active Pd O on the catalyst surface, thus benefits methane oxidation. Homogeneous reaction between CH 4, O_(2), and NO_(x) may be partially responsible for the alleviation above 650 ℃. The interesting research of alleviation in transient deactivation by NO_(x), the components co-existing in exhausts, are of great significance for the application. | Chang Cui Yan Zhang Wenpo Shan Yunbo Yu Hong He | 2022 | Journal of Environmental Sciences2022，34，2： | 0 |
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