Authentication email has already been sent, please check your email box: and activate it as soon as possible.
You can login to My Profile and manage your email alerts.
If you haven’t received the email, please:
|
|
There are 18 papers published in subject: > since this site started. |
Select Subject |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
1. Influence of Preparation Condition on the Performance of Ni-based Catalysts for the Glycerol Steam Reforming | |||
XIE Shuang,Zhang Xianghua,Tu Qiang,Shi Biao,Cui Yuehua,Chen Changguo | |||
Chemistry 11 May 2018 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:The effect of preparation condition on the performance of Ni-based catalysts was investigated for the glycerol steam reforming. The La0.7Ce0.3NiO3 mixed oxides were synthesized using different solution concentrations and calcination temperatures by co-precipitation method. BET, ICP, XRD, TPR, FE-SEM, CO2-TPD, TGA and Raman spectroscopy were used to characterize the catalysts. Including La2NiO4 phase at lowest solution concentration, catalyst precursor included LaNiO3 phase instead of La2NiO4 at other solution concentrations. At low calcination temperature of 700 C, it was found that smaller particle size of CeO2 incorporated more lanthanum, higher surface basicity and La2O2CO3 phase could effectively inhibit and eliminate coking leading to the better performance of catalyst. | |||
TO cite this article:XIE Shuang,Zhang Xianghua,Tu Qiang, et al. Influence of Preparation Condition on the Performance of Ni-based Catalysts for the Glycerol Steam Reforming[OL].[11 May 2018] http://en.paper.edu.cn/en_releasepaper/content/4745028 |
2. Effect of photocatalysis on Fischer-Tropsch synthesis activity and selectivity of the TiO2 nanotube supported Co Catalyst | |||
WANG Limin,WANG Liqing,ZHANG Yichi,SU Haiquan | |||
Chemistry 21 December 2016 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:To explore a method with high activity and selectivity,is the key to improve Fischer-Tropsch synthesis(FTS) technology and the main focus in academic field. Herein,a photocatalytic route was employed into traditional thermochemical FTS,constituting a photothermocatalytic system.The 20%Co/TiO2 nanotube catalyst was prepared by the incipient wetness impregnation method, and applied to phtothermocatalytic process to investigate the role of illumination for the FTS reaction.The introduction of light dramatically improved CO conversion, from 9.18% to 63.92%.In addition,illumination gave rise to an increase in light paraffin selectivity.The present work demonstrates that photothermocatalysis could be a promising research direction on enhancing FTS catalytic performance and adjusting product distribution . | |||
TO cite this article:WANG Limin,WANG Liqing,ZHANG Yichi, et al. Effect of photocatalysis on Fischer-Tropsch synthesis activity and selectivity of the TiO2 nanotube supported Co Catalyst[OL].[21 December 2016] http://en.paper.edu.cn/en_releasepaper/content/4714367 |
3. Catalytic Adsorptive Desulfurization Using TiO2/SBA-15 under Mild Conditions | |||
REN Xiaoling,XIAO Jing | |||
Chemistry 21 November 2015 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:This study investigates catalytic adsorptive desulfurization (CADS) of model diesel fuel using TiO2/SBA-15 under mild conditions. The TiO2/SBA-15 was prepared by a facile incipient wetness impregnation method and characterized by N2 adsorption and X-ray diffraction. The CADS referred to ADS performance were evaluated in a batch reactor. High desulfurization uptake of 12.7 mg/g was achieved at low sulfur concentration of 15 ppmw-S by TiO2/SBA-15 under CADS, which was two-magnitude higher than that under ADS without the in-situ catalytic oxidation of dibenzothiophene. Kinetic results suggested that the CADS equilibrium over TiO2/SBA-15 was reached fast in 0.5 h. In the CADS-TiO2/SBA-15 system, the TiO2 loading, cumene hydroperoxide/dibenzothiophene ratio and CADS temperature were optimized to be 10 wt.%, 2, and 35 C, respectively. Furthermore, desulfurization tests in 5 consecutive CADS-regeneration cycles suggested that the bi-functional TiO2/SBA-15 can be regenerated by acetonitrile washing followed with oxidative air treatment. The superior desulfurization uptake at low sulfur concentration range, fast adsorption kinetics, excellent regenerability, operation at mild conditions, and facile and low-cost adsorbent synthesis make the CADS-TiO2/SBA-15 system an effective and economic desulfurization approach for ultra-clean fuel production.. | |||
TO cite this article:REN Xiaoling,XIAO Jing. Catalytic Adsorptive Desulfurization Using TiO2/SBA-15 under Mild Conditions[OL].[21 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4664409 |
4. Gold supported on zirconia polymorphs for dehydrogenation of formic acid in base-free aqueous medium | |||
BI Qingyuan,LIN Jiandong,JIANG Tao,LI Yiyang,LIU Yongmei,HE Heyong,CAO Yong | |||
Chemistry 16 June 2015 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:It is highly desirable to develop an efficient heterogeneous catalyst for selective formic acid (FA) decomposition for ultraclean H2 gas in the absence of any organic/inorganic alkalis or extra additives under mild conditions. Au/ZrO2 has been proven to be a robust and efficient catalyst for FA dehydrogenation. Yet, there is a lack of understanding of the crystallite phase effect of ZrO2 for supporting active Au in target process. We report here ZrO2 with different polymorphs supported Au nanoparticles (NPs) can achieve near completion of FA dehydrogenation at 80 oC, and Au/m-ZrO2 catalyst with the largest amount of surface basic sites exhibited the highest catalytic activity. Basic sites in Au catalyst surface can substantially facilitate crucial FA deprotonation process in base-free aqueous medium which appears to be a key factor for achieving high dehydrogenation performance. | |||
TO cite this article:BI Qingyuan,LIN Jiandong,JIANG Tao, et al. Gold supported on zirconia polymorphs for dehydrogenation of formic acid in base-free aqueous medium[OL].[16 June 2015] http://en.paper.edu.cn/en_releasepaper/content/4647162 |
5. Partially reduced iridium oxide clusters dispersed on titania as efficient catalyst for facile synthesis of dimethylformamide from CO2, H2 and dimethylamine | |||
BI Qingyuan,LIN Jiandong,LIU Yongmei,XIE Songhai,HE Heyong,CAO Yong | |||
Chemistry 21 April 2014 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:A novel bifunctional catalyst based on partially reduced iridium oxide supported on TiO2 was found to be exceedingly efficient for the organic-solvent-free synthesis of dimethylformamide from CO2, H2 and dimethylamine. | |||
TO cite this article:BI Qingyuan,LIN Jiandong,LIU Yongmei, et al. Partially reduced iridium oxide clusters dispersed on titania as efficient catalyst for facile synthesis of dimethylformamide from CO2, H2 and dimethylamine[OL].[21 April 2014] http://en.paper.edu.cn/en_releasepaper/content/4593935 |
6. Photocatalytic Decomposition of Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoate (PFOA) by Sr-β-Bi2O3 under Visible Light Irradiation | |||
YIN Lifeng,Bo Fusheng,Dai Yunrong | |||
Chemistry 16 October 2013 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) are difficult to remove from the water environment due to their inertness to photolysis, hydrolysis, and biodegradation. In the study, the rapid decomposition of PFOS and PFOA was found in the presence of Sr-β-Bi2O3 as a photocatalyst under visible light irradiation. Compared with nano-TiO2 and direct photolysis, the photocatalysis by Sr-β-Bi2O3 can remove PFOS and PFOA more efficiently. In 1.0 h, about 72.3% of PFOS and 60.1% of PFOA ([PFOS]i = [PFOA]i = 100 μgL-1) can be removed from the aqueous solution under visible light irradiation (λ > 440 nm). The effects of temperature, pH, and initial PFOS/PFOA concentration on the photocatalytic decomposition rates were investigated. Sequentially, the intermediate products were identified as PFO (C8F17), PFHe (C6F13), PFPe (C5F11), PFBu (C4F9), PFPr (C3F7), PFHpS (C7F15SO3), and PFHeS (C6F13SO3). Based on the detection of reactive radicals, photocatalytic reduction by hydrated electron was determined as the major degradation route. The detailed defluorination pathway was also proposed. | |||
TO cite this article:YIN Lifeng,Bo Fusheng,Dai Yunrong. Photocatalytic Decomposition of Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoate (PFOA) by Sr-β-Bi2O3 under Visible Light Irradiation[OL].[16 October 2013] http://en.paper.edu.cn/en_releasepaper/content/4564646 |
7. Crystal Transformation and Visible light Driven Photocatalytic Activities of Vanadium doped Bismuth Oxide | |||
YIN Lifeng,Bo Fusheng,Dai Yunrong | |||
Chemistry 16 October 2013 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:The doping of bismuth oxide with vanadium yielded a series of photocatalysts with visible light responsive ability, including bismuth subcarbonate (Bi2O2CO3), monoclinic bismuth vanadate (BiVO4), bismuth oxides, cubic bismuth vanadate (Bi12.38V0.62O20.12) and their co-crystalline under the different anneal temperatures. It is suggested that vanadium doping in the lattice of bismuth oxide results in the crystalline transformation. Among them, the mixture of cubic bismuth oxide and bismuth vanadate presented the highest degradation efficiency (98.5%) for 4-chlorophenol, a widespread environmental pollutant, under visible light and sunlight irradiation. The degradation mechanism was ascribed to the photocatalytic reduction by the photo-generated electron. | |||
TO cite this article:YIN Lifeng,Bo Fusheng,Dai Yunrong. Crystal Transformation and Visible light Driven Photocatalytic Activities of Vanadium doped Bismuth Oxide[OL].[16 October 2013] http://en.paper.edu.cn/en_releasepaper/content/4564373 |
8. Highly Efficient and Stable Cu/ZnO/Al2O3 Catalyst for Glycerol Hydrolysis | |||
CUI Yuanyuan,Guo Xiuying,Yang Xinli,Yin Anyuan,Dai Weilin | |||
Chemistry 18 December 2012 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Highly dispersed copper nanoparticles supported on Al2O3 are successfully prepared via the facial co-precipitation method. The addition of appropriate amount of ZnO is beneficial to the formation of highly dispersed copper species on the surface of Cu/ZnO/Al2O3 samples. The Cu/ZnO/Al2O3 (4/2/4) catalyst which does not need the reduction pretreatment shows much higher activity compared with those catalysts commonly used for this reaction. A high glycerol conversion (92.5%), with 99.0% selectivity to 1,2-propanediol was obtained under mild reaction conditions (453 K, 3 MPa initial H2 pressure). | |||
TO cite this article:CUI Yuanyuan,Guo Xiuying,Yang Xinli, et al. Highly Efficient and Stable Cu/ZnO/Al2O3 Catalyst for Glycerol Hydrolysis[OL].[18 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4503415 |
9. The enantio-differentiating hydrogenation of methyl acetoacetate over tartaric acid modified Raney nickel catalysts with the in-situ modification | |||
LI Rong,CHEN Long,CAI Shunli | |||
Chemistry 26 April 2011 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Tartaric acid modified Raney nickel catalyst has been prepared by the in-situ modification and applied in the enantio-differentiating hydrogenation of methyl acetoacetate. The effects of varying the reaction temperature and pressure, solvent type, the amount of tartaric acid, additive and the reaction time on the optical yield and, in part, on the hydrogenation activity were systematically investigated. Various different types of Raney nickel catalysts were used in this paper. In order to deeply understand the inherent problems of the factor effects, various physico-chemical methods were employed in this research, such as inductive coupled high frequency plasma source (ICP), X-ray diffractometry (XRD) and so on. The highest optical yield of 61.6% was achieved over the improved T-1 RNi catalyst with an addition of 0.05 ml acetic acid under the optimal conditions. | |||
TO cite this article:LI Rong,CHEN Long,CAI Shunli. The enantio-differentiating hydrogenation of methyl acetoacetate over tartaric acid modified Raney nickel catalysts with the in-situ modification[OL].[26 April 2011] http://en.paper.edu.cn/en_releasepaper/content/4423027 |
10. NO selective reduction by hydrogen on TiO2 supported metal clusters: a general mechanism study by in situ DRIFT spectroscopy | |||
Li Landong,Wu Guangjun,Guan Naijia | |||
Chemistry 10 December 2010 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:IThe selective catalytic reduction of nitric oxide with hydrogen is studied using TiO2 supported metal clusters (Pt, Ir, Ni) as novel catalysts at the reaction temperatures between 80 and 255 oC. The activity and selectivity of metal/TiO2 catalysts are found to be dependent on the nature of surface function groups formed, which are monitored by in situ diffuse reflectance infrared Fourier transform spectroscopy. Several kinds of adsorbed NOx species have been observed on catalysts under NO-H2-O2 reaction conditions, which should be responsible for different reaction products (N2O, N2 and NO2). Base on the catalytic performances and in situ DRIFTS results, a general mechanism for NO-H2-O2 reaction on metal/TiO2 catalysts is proposed. | |||
TO cite this article:Li Landong,Wu Guangjun,Guan Naijia. NO selective reduction by hydrogen on TiO2 supported metal clusters: a general mechanism study by in situ DRIFT spectroscopy[OL].[10 December 2010] http://en.paper.edu.cn/en_releasepaper/content/4396849 |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
About Sciencepaper Online | Privacy Policy | Terms & Conditions | Contact Us
© 2003-2012 Sciencepaper Online. unless otherwise stated