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| 1 | Iron-doped Mn-Ce/TiO_2 catalyst for low temperature selective catalytic reduction of NO with NH_3显示文摘The catalysts of iron-doped Mn-Ce/TiO 2(Fe-Mn-Ce/TiO 2) prepared by sol-gel method were investigated for low temperature selective catalytic reduction(SCR) of NO with NH 3.It was found that the NO conversion over Fe-Mn-Ce/TiO 2 was obviously improved after iron doping compared with that over Mn-Ce/TiO 2.Fe-Mn-Ce/TiO 2 with the molar ratio of Fe/Ti = 0.1 exhibited the highest activity.The results showed that 96.8% NO conversion was obtained over Fe(0.1)-Mn-Ce/TiO 2 at 180°C at a space velocity of 50,000 hr 1.Fe-Mn-Ce/TiO 2 exhibited much higher resistance to H 2 O and SO 2 than that of Mn-Ce/TiO 2.The properties of the catalysts were characterized using X-ray diffraction(XRD),N 2 adsorption,temperature programmed desorption(NH 3-TPD and NOx-TPD),and Xray photoelectron spectroscopy(XPS) techniques.BET,NH3-TPD and NOx-TPD results showed that the specific surface area and NH3 and NOx adsorption capacity of the catalysts increased with iron doping.It was known from XPS analysis that iron valence state on the surface of the catalysts were in Fe3+ state.The doping of iron enhanced the dispersion and oxidation state of Mn and Ce on the surface of the catalysts.The oxygen concentrations on the surface of the catalysts were found to increase after iron doping.Fe-Mn-Ce/TiO2 represented a promising catalyst for low temperature SCR of NO with NH3 in the presence of H2 O and SO2. | Boxiong Shen ,Ting Liu,Ning Zhao,Xiaoyan Yang,Lidan Deng College of Environmental Science and Engineering,Nankai University,Tianjin 300071,China. | 2010 | Journal of Environmental Sciences2010，22，9： | 63 |
| 2 | A comparative study of Mn/CeO_2,Mn/ZrO_2 and Mn/Ce-ZrO_2 for low temperature selective catalytic reduction of NO with NH_3 in the presence of SO_2 and H_2O显示文摘Ce-ZrO2 is a widely used three-way catalyst support.Because of the large surface area and excellent redox quality,Ce-ZrO2 may have potential application in selective catalytic reduction(SCR) systems.In the present work,Ce-ZrO2 was introduced into a low-temperature SCR system and CeO2 and ZrO2 supports were also introduced to make a contrastive study.Mn/CeO2,Mn/ZrO2 and Mn/Ce-ZrO2 were prepared by impregnating these supports with Mn(NO3)2 solution,and have been characterized by N2-BET,XRD,TPR,TPD,XPS,FT-IR and TG.The activity and resistance to SO2 and H2O of the catalysts were investigated.Mn/Ce-ZrO2 and Mn/CeO2 were proved to have better low-temperature activities than Mn/ZrO2,and yielded 98.6% and 96.8% NO conversion at 180°C,respectively.This is mainly because Mn/Ce-ZrO2 and Mn/CeO2 had higher dispersion of manganese oxides,better redox properties and more weakly adsorbed oxygen species than Mn/ZrO2.In addition,Mn/Ce-ZrO2 showed a good resistance to SO2 and H2O and presented 87.1% NO conversion,even under SO2 and H2O treatment for 6 hours,and the activity of Mn/Ce-ZrO2 was almost restored to its original level after cutting off the injection of SO2 and H2O.This was due to the weak water absorption and weak sulfation process on the surface of the catalyst. | Boxiong Shen Xiaopeng Zhang Hongqing Ma Yan Yao Ting Liu | 2013 | Journal of Environmental Sciences2013，25，4： | 30 |
| 3 | Emission control strategies of hazardous trace elements from coal-fired power plants in China显示文摘China’s energy dependents on coal due to the abundance and low cost of coal.Coal provides a secure and stable energy source in China.Over-dependence on coal results in the emission of Hazardous Trace Elements(HTEs)including selenium(Se),mercury(Hg),lead(Pb),arsenic(As),etc.,from Coal-Fired Power Plants(CFPPs),which are the major toxic air pollutants causing widespread concern.For this reason,it is essential to provide a succinct analysis of the main HTEs emission control techniques while concurrently identifying the research prospects framework and specifying future research directions.The study herein reviews various techniques applied in China for the selected HTEs emission control,including the technical,institutional,policy,and regulatory aspects.The specific areas covered in this study include health effects,future coal production and consumption,the current situation of HTEs in Chinese coal,the chemistry of selected HTEs,control techniques,policies,and action plans safeguarding the emission control.The review emphasizes the fact that China must establish and promote efficient and clean ways to utilize coal in order to realize sustainable development.The principal conclusion is that cleaning coal technologies and fuel substitution should be great potential HTEs control technologies in China.Future research should focus on the simultaneous removal of HTEs,PM,SOx,and NOx in the complex flue gas. | Adwek George Boxiong Shen Dongrui Kang Jiancheng Yang Jiangze Luo | 2020 | Journal of Environmental Sciences2020，32，7： | 18 |
| 4 | Mn-CeOx/Ti-PILCs for selective catalytic reduction of NO with NH_3 at low temperature显示文摘Titanium-pillared clays (Ti-PILCs) were obtained by different ways from TiCl4, Ti(OC3H7)4 and TiOSO4, respectively. Mn-CeOx/Ti- PILCs were then prepared and their activities of selective catalytic reduction (SCR) of NO with NH3 at low-temperature were evaluated. Mn-CeOx/Ti-PILCs were characterized by X-ray diffraction, N2 adsorption, Fourier transform infrared spectroscopy, thermal analysis, temperature-programmed desorption of ammonia and H2-temperature-programmed reduction. It was found that Ti-pillar tend to be helpful for the enlargement of surface area, pore volume, acidity and the enhancement of thermal stability for Mn-CeOx/Ti-PILCs. Mn- CeOx/Ti-PILCs catalysts were active for the SCR of NO. Among three resultant Mn-CeOx/Ti-PILCs, the catalyst from TiOSO4 showed the highest activity with 98% NO conversion at 220°C, it also exhibited good resistance to H2O and SO2 in flue gas. The catalyst from TiCl4 exhibited the lowest activity due to the unsuccessful pillaring process. | Boxiong Shen Hongqing Ma Yan Yao | 2012 | Journal of Environmental Sciences2012，24，3： | 16 |
| 5 | Review on the NO removal from flue gas by oxidation methods显示文摘Due to the increasingly strict emission standards of NOx on various industries,many traditional flue gas treatment methods have been gradually improved.Except for selective catalytic reduction(SCR)and selective non-catalytic reduction(SNCR)methods to remove NOx from flue gas,theoxidation method is paying more attention to NOx removal now because of the potential to simultaneously remove multiple pollutants from flue gas.This paper summarizes the efficiency,reaction conditions,effect factors,and reaction mechanism of NO oxidation from the aspects of liquid-phase oxidation,gas-phase oxidation,plasma technology,and catalytic oxidation.The effects of free radicals and active components of catalysts on NO oxidation and the combination of various oxidation methods are discussed in detail.The advantages and disadvantages of different oxidation methods are summarized,and the suggestions for future research on NO oxidation are put forward at the end.The review on the NO removal by oxidation methods can provide new ideas for future studies on the NO removal from flue gas. | Meng Si Boxiong Shen George Adwek Lifu Xiong Lijun Liu Peng Yuan Hongpei Gao Cai Liang Qihai Guo | 2021 | Journal of Environmental Sciences2021，33，3： | 8 |
| 6 | Composition-dependent micro-structure and photocatalytic performance of g-C_(3)N_(4) quantum dots@SnS2 heterojunction显示文摘Semiconductor combination is one of the most common strategies to obtain high-efficiency photocatalysts;however, the effect mechanism of composition ratio on micro-structure and photocatalytic activity is remaining unclear. In this study, a case of g-C_(3)N_(4) quantum dots@SnS_(2) (CNQDn@SnS_(2)) heterojunction with different ratio of CNQD is used to uncover the origin of optimum and excess composition for photocatalysts. Research on the functional mechanism of the optimum composition shows that 0.8 wt.% CNQD are completely attached to the non-(001) facets of SnS_(2), which benefits the formation of type-II heterojunction, resulting in an optimal pollutant degradation and mineralization efficiency. For the excess composition, both experiments and theoretical calculations confirm that excess CNQD (the part exceeding of 0.8 wt.%) located on the (001) facet of SnS_(2), leading to the type-I band alignment of this heterojunction, which severely restricts the separation of photo-induced charge carriers, and thus reduces their lifetime. This work makes the functional mechanism of composition ratio on micro-structure and photocatalytic activity clearer. Related research results provide a new insight into semiconductor combination study and take an important step toward the rational design of highly active photocatalysts. | Sheng-Qi Guo Haijun Zhang Zhenzhong Hu Mengmeng Zhen Bo Yang Boxiong Shen Fan Dong | 2021 | Nano Research2021，14，11： | 4 |
| 7 | Suitable lithium polysulfides diffusion and adsorption on CNTs@TiO_(2)-bronze nanosheets surface for high-performance lithium-sulfur batteries显示文摘The shuttle effect of lithium polysulfides(UPSs)in lithium-sulfur batteries(LSBs)has been hampered their commercialization.Metal oxides as separator modifications can suppress the shuttle effect.Since there is no direct electron transport between metal oxides and UPSs,absorbed UPSs should be diffused from the surface of metal oxides to the carbon matrix to go through redox reactions.If diffusivity of UPSs from metal oxides surface to carbon substrate is poor,it would hinder the redox reactions of LiPSs.Nevertheless,researchers tend to focus on the adsorption and overlook the diffusion of UPSs.Herein,same morphology and different crystal phase of TiO_(2) nanosheets grown on carbon nanotubes(CNTs@TiO_(2)-bronze and CNTs@TiO_(2)-anatase)have been designed via a simple approach.Compared with CNTs and CNTs@TiO_(2)-anatase composites,the battery with CNTs@TiO_(2)-bronze modified separator delivers higher specific capacities and stronger cycling stability,especially at high current rates(~472 mAh·g^(-1) at 2.0 C after 1,000 cycles).Adsorption tests,density functional theory calculations and electrochemical performance evaluations indicate that suitable diffusion and adsorption for LiPSs on the CNTs@TiO_(2)-B surface can effectively capture LiPSs and promote the redox reaction,leading to the superior cycling performances. | Mengmeng Zhen Keliang Jiang Sheng-Qi Guo Boxiong Shen Huiling Liu | 2022 | Nano Research2022，15，2： | 2 |
| 8 | Kinetic model for natural gas rebuming显示文摘 | Shen Boxiong Yao Qiang Xu Xuchang | 2004 | Fuel Processing Technology2004，85，11： | 1 |
| 9 | The relative importance of char and volatile nitrogen on formation of nitrous oxides and nitric oxides 显示文摘 | LIU Dechang WU Zhengshun SHEN Boxiong | 1999 | Energy & Fuels1999，，： | 1 |
| 10 | Amulticenter ran- domized double-blind prospective study of the postoperative pa- tient controlled intravenous analgesia effects of dezocine in elderly patients 显示文摘 | Chunying Wang Lizhi Li Boxiong Shen | 2014 | Int J Clin Exp Med2014，7，3： | 1 |
| 11 | Kinetic model for natural gas reburning显示文摘 | Shen Boxiong Yao Qiang Xu Xuchang | 2004 | Fuel Processing Technology2004，85，11： | 1 |
| 12 | MSW catalytic combustion by alkali and alkali-earth salts 显示文摘 | Shen Boxiong Wu Chunfei Qin Lei | 2006 | Energy2006，31，14： | 1 |
| 13 | Kinetic model for natural gas reburning显示文摘 | Shen Boxiong Yao Qiang Xu Xuchang | 2004 | Fuel Processing Technology2004，，85： | 1 |
| 14 | Pyrolysis of waste tyres with zeolite USY and ZSM-5 catalysts 显示文摘 | Shen Boxiong Wu Chunfei Guo Binbin | 2007 | Applied Catalysis B: Environmental2007，73，： | 1 |
| 15 | Preparation of PILCs With Different Pillar Materials Loading Mn-Ce and De-NO Activity显示文摘 | SHEN Boxiong SUN Xi YANG Xiaoyan | 2013 | 中国电机工程学报2013，33，11： | 1 |
| 16 | Removal of elemental mercury by KI-impregnated clay显示文摘这研究描述了 KI 在煤气的阶段使妊娠的泥土的使用元素的水银(Hg 在烟道气体的 o ) 移动。装载的 KI 的效果,温度, O 2, 那么 2 和 H 2 Hg o 移动用一个固定的床反应堆被调查。Hg 有装载的 3% KI 的 KI 泥土的 o 移动效率能在 3 h 以后在高水平(约 80 %) 维持。KI 泥土示威了是为 Hg o 移动什么时候与激活的碳相比基于的吸附物。O 2 被发现是在改进 Hg o 移动。O 2 被表明帮助 KI 的转移到我 KI 泥土的表面上的 2 ,它能与 Hg o 直接。不并且那么, 2 能稍微改进 Hg o 移动,当时 H 2 O 极大地禁止了它。结果显示在吸附以后,大多数水银再逃离表面。当它离开了表面,一些水银可能被氧化了。结果证明化学反应首先在 KI 泥土的表面上发生在 KI 和水银之间。 | Boxiong SHEN Jianhong CHEN Ji CAI | 2016 | Frontiers of Environmental Science & Engineering2016，10，2： | 0 |
| 17 | Low-temperature selective catalytic reduction of NO with NH_(3) based on MnO_(x)-CeO_(x)/ACFN显示文摘MnO_(x)-CeO_(x)/ACFN were prepared by the impregnation method and used as catalyst for selective catalytic reduction of NO with NH_(3) at 80℃-150℃.The catalyst was characterized by N_(2)-BET,scanning electron microscopy(SEM)and Fourier transform infrared spectroscopy(FT-IR).The fraction of the mesopore and the oxygen functional groups on the surface of activated carbon fiber(ACF)increased after the treatment with nitric acid,which was favorable to improve the catalytic activities of MnO_(x)-CeO_(x)/ACFN.The experimental results show that the conversion of NO is nearly 100%in the range 100℃-150℃under the optimal preparation conditions of MnO_(x)-CeO_(x)/ACFN.In addition,the effects of a series of performance parameters,including initial NH3 concentration,NO concentration and O_(2) concentration,on the conversion of NO were studied. | Boxiong SHEN Ting LIU Zhanliang SHI Jianwei SHI Tingting YANG Ning ZHAO | 2008 | Frontiers of Chemical Science and Engineering2008，2，3： | 0 |
| 18 | Uncovering mechanism of photocatalytic performance enhancement induced by multivariate defects on SnS_(2)显示文摘Defect engineering is recognized as an effective route to obtain highly active photocatalytic materials.However,the current understanding of defects is mainly limited to isolated atomic vacancy defects,ignoring the exploration of the functions of multivariate defects formed by the deletion of several adjacent atoms in photocatalytic system.Here,we prepared SnS2 nanostructures with the same morphology but different dominant defects,and by testing their photocatalytic performance,it was found that the multivariate defects can significantly improve the photocatalytic performance than isolated S vacancies.Combining experiments and theoretical calculations,we confirmed that the promotion of multivariate defects,especially“S-Sn-S”vacancy associates,on the photocatalytic performance is reflected in many aspects,such as the regulation of the energy band structure,the improvement of the charge separation efficiency,and the promotion of the adsorption and activation of guest molecules.SnS2 with“S-Sn-S”vacancy associates exhibits excellent photocatalytic water purification ability.Under the induction of“S-Sn-S”vacancy associates,phenol was thoroughly photocatalytically decomposed,further confirming its excellent functionality.This work not only provides new insights into identifying advantage defects in the catalyst structure,but also offers new ideas for constructing highly active photocatalysts based on defect engineering. | Sheng-Qi Guo Bo Yang Zhenzhong Hu Mengmeng Zhen Bingchuan Gu Boxiong Shen | 2023 | Nano Research2023，16，2： | 0 |
| 19 | Effect of K and Ca on catalytic activity of Mn-CeOx/Ti-PILC显示文摘 | Boxiong SHEN Lidan DENG Jianhong CHEN | 2013 | Frontiers of Environmental Science & Engineering2013，7，4： | 0 |
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