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Preparation and characterization of SO42-/TiO2 and S2O82-/TiO2 catalysts

MA Xuedan, GUO Daishi, JIANG Qizhong, MA Zifeng, MA Zhengfei, YE Weidong, LI Chunbo

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 45-49 doi: 10.1007/s11705-007-0009-5

Abstract: Nanosized solid superacids SO/TiO and SO/TiO, as well as MCM-41-supported SO/ZrO, were prepared. Their structures, acidities, and catalytic activities were investigated and compared using XRD, N adsorption-desorption, and in situ FTIR-pyridine adsorption, as well as an evaluation reaction with pseudoionone cyclization. The results showed that SO/TiO and SO/TiO possess not only nanosized particles with diameters <7.0 nm, a BET surface greater than 140 cm/g and relatively regular mesostructures with pores around 4.0 nm, but also a pure anatase phase and strong acidity. Different from the Lewis acid nature of SO/ZrO/MCM-41, SO/TiO and SO/TiO exhibit mainly Br¢nsted acidities. The strongest Br¢nsted acid sites were produced on SO/TiO promoted with HSO, while Lewis acid sites on SO/TiO even stronger than those on SO/ZrO/MCM-41 were generated when persulfate solution was used as sulfating agent. Because of their distinct acid natures, SO/TiO and SO/TiO exhibited catalytic activities for the cyclization of pseudoionone that were much higher than that of SO/ZrO/MCM-41. It can be concluded that the existence of more Br¢nsted acid sites was favorable for proton participation in the cyclization reaction.

Keywords： exhibit     Different     persulfate     adsorption-desorption     catalytic    

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Rh2O3/hexagonal CePO4 nanocatalysts for N2O decomposition

Huan Liu, Zhen Ma

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 586-593 doi: 10.1007/s11705-017-1659-6

Abstract: Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials.The Rh O supported on the CePO nanowires was much more active for the catalytic decomposition of NO than the Rh O supported on CePO nanorods.of both catalysts as a function of time on stream was studied and the influence of the co-feed (CO , O, H O or O /H O) on the N O decomposition was also investigated.

Keywords： Rh2O3     CePO4     N2O decomposition    

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Effect of biochar amendment on soil’s retention capacity for estrogenic hormones from poultry manure

Sukhjot MANN, Zhiming QI, Shiv O. PRASHER, Lanhai LI, Dongwei GUI, Qianjing JIANG

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 208-219 doi: 10.15302/J-FASE-2017138

Abstract: Most animals, including humans, produce natural sex hormones such as estrogens: 17β-estradiol (E2) andthat 1% slow pyrolysis biochar-amended sandy soil could retain significant amount of estrogens (E1, E2)

Keywords： adsorption     degradation     dissolved organic carbon     17β-estradiol (E2)     estrone (E1)    

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Performance and mechanism of carbamazepine removal by FeS-SO process: experimental investigation and DFT calculations

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1713-1

Abstract: List>

● Synergistic removal of carbamazepine (CBZ) was obtained in the FeS-S2O82– process.

Keywords： FeS     S2O82–     Carbamazepine     DFT calculations     Degradation routes    

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Correlations for estimating solar radiation using sunshine hours and temperature measurement in Osogbo, Osun State, Nigeria

O. S. OHUNAKIN, M. S. ADARAMOLA, O. M. OYEWOLA, R. O. FAGBENLE

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 214-222 doi: 10.1007/s11708-013-0241-2

Abstract: In this study, the global solar radiation on horizontal surface in Osogbo, Osun state, Nigeria was analyzed using 11-year data (1997–2007). Correlations using linear and quadratic expressions were developed to relate the global solar radiation on horizontal surface based on relative sunshine hours and temperature measurements for evaluating the monthly average daily global solar radiation. The calculated monthly clearness index values indicate that the prevailing weather condition in Osogbo is heavily overcast. All the developed quadratic correlations gave better correlation coefficients (0.834, 0.872 and 0.823 respectively) than the linear models. However, the Hargreaves and Samani related based quadratic model gave the best among the three developed quadratic expressions and is therefore suggested for estimating the monthly global radiation in this site and its surroundings.

Keywords： global solar radiation     Hargreaves model     sunshine hour     ambient temperatures     Osogbo    

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Inexpensive synthesis of a high-performance Fe

Imran, Muhammad S. Haider, Hee Taik Kim

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 405-416 doi: 10.1007/s11705-016-1579-x

Abstract: A sol-gel technique has been developed for the synthesis of a magnetite-silica-titania (Fe O -SiO -TiO

Keywords： sol-gel     photocatalysis     magnetic recovery     TiO2     Fe3O4     SiO2    

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The stabilization effect of Al2O3 on unconventional Pb/SiO2 catalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1423-1429 doi: 10.1007/s11705-023-2315-y

Abstract: To enhance the stability, the traditional carrier Al2O3 with a small amount, wasintroduced into Pb/SiO2 catalyst in this study.It has been proved that Al2O3 can inhibit the reduction of PbO, and weaken theAs a result, 3Al15Pb/SiO2 catalyst exhibits a much higher stability up to more than 150 h./sub>O3 addition was also proposed.

Keywords： Pb/SiO2     Al2O3     propane dehydrogenation     propene     stability    

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A multi-integrated approach on toxicity effects of engineered TiO

PAIXÃO,Liliana MOITA,Luis SILVA,Mário S.DINIZ,Joana LOURENÇO,Isabel PERES,Luisa CASTRO,José Brito CORREIA,Joana PEREIRA,Isabel FERREIRA,António

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 793-803 doi: 10.1007/s11783-015-0775-0

Abstract: showed no effect on a 21 day survival test, though at a biochemical level the cytosolic Glutathione-S-Transferase

Keywords： ecotoxicity     enzymatic analysis     histology     transmission electron microscopy (TEM)     TiO2-nanoparticles    

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Development of H2O/CO2 co-electrolysis in solid oxide electrolysis cell

Fan Hui,Song Shidong,Han Minfang

Strategic Study of CAE 2013, Volume 15, Issue 2,   Pages 107-112

Abstract: The structure of SOEC, the recent development of high temperature steam/CO2 co-electrolysis from

Keywords： SOEC     H2O/CO2 co-electrolysis     syngas     electrolysis efficiency     water electrolysis    

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Accurate quantification of 3′-terminal 2′-O-methylated small RNAs by utilizing oxidative deep sequencing

Frontiers of Medicine 2022, Volume 16, Issue 2,   Pages 240-250 doi: 10.1007/s11684-021-0909-7

Abstract: -O-methylation.However, quantifying the levels of these small RNAs is difficult because 2′-O-methylation at the RNAIn this study, we profiled 3′-terminal 2′-O-methyl plant miRNAs in the livers of rice-fed mice by oxidativeLikewise, stem-loop RT-qPCR was superior to poly(A)-tailed RT-qPCR in quantifying 3′-terminal 2′-O-methylAccurate measurement of the 3′-terminal 2′-O-methylation of small RNAs has profound implications for

Keywords： small RNAs     2′-O-methylation     sequencing     RT-qPCR    

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Spray Preparation, Microstructure and Properties of Al2O3-MxO Hard -

Wang Biao,Wang Yudong,Li Huiling,Zhang Zihua

Strategic Study of CAE 2002, Volume 4, Issue 9,   Pages 75-80

Abstract: carbon steel substrate, base coating of nickel-coated aluminium and intermediate coating of 50% Al2O3 + 50% Ni were prepared by means of oxyacetylene spray, and final coating of Al2O3 ～ MxOy was prepared by means of plasma spray.60% (mass) sulphuric acid with 60 % concentration, and 40% (mass) phosphoric ore powder, the Al2O3 ～ MxOy coating resistance to corrosion and wear, is 7.46 times

Keywords： Al2O3-MxOy     coating     plasma     resistance to corrosion     resistance    

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Optimization of the O/HO process with response surface methodology for pretreatment of mother liquor

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1371-5

Abstract:

• Real ML-GFW with high salinity and high organics was degraded by O3/H2O2 process.

Keywords： High salinity     High organic matters     Gas field wastewater     O3/H2O2    

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Thermodynamic Analysis and Reaction Model of Combustion Synthesis in Al-Cr2O3 Systemwith Al2O3 and Cr2O3 Diluents

Zhang Yancheng,Pan Ye,Zhang Chuan

Strategic Study of CAE 2004, Volume 6, Issue 6,   Pages 63-67

Abstract:

The thermodynamic calculation and analysis of combustion synthesis reaction of Al - Cr<sub>2</sub>O<sub>3</sub> system with AI<sub>2</sub>O<sub>3</sub>and Cr<sub>2</sub>O<sub>3</sub> diluents were conducted, and the effects of reactionstarting temperature T<sub>O</sub>, diluents AI<sub>2</sub>O<sub>3</sub> and Cr<sub>2</sub>O<sub>3</sub> on the adiabatic combustion temperature

Keywords： cermet     combustion synthesis     Al - Cr2O3 system     thermodynamics     reaction model    

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Effect of TiO 2 loading on the activity of V/TiO 2 -Al 2 O 3 in the catalytic oxidehydrogenation of ethylbenzene

Xiaohong LI, Wenying LI,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 142-146 doi: 10.1007/s11705-009-0233-2

Abstract: TiO-AlOmixed oxides with different compositions ranging from 40wt-% to 95wt-% of TiO were prepared by sol-gel method and impregnated with different amounts of VO. Supports and catalysts were characterized by X-ray diffraction (XRD), physisorption, temperature preprogrammed reduction (H-TPR), and ammonia temperature programmed desorption (NH-TPD). TiO content in the support had obvious effect on the crystal structure, texture characteristic, acid property, and catalytic activity in dehydrogenation of ethylbenzene (EB) with carbon dioxide. The highest catalytic activity was acquired when the TiO content was 50 wt-%.

Keywords： desorption     different     TiO-AlOmixed     physisorption     ethylbenzene    

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Study on tribological and electrochemistry properties of metal materials in H2O2 solutions

Chengqing YUAN, Li YU, Jian LI, Xinping YAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 93-98 doi: 10.1007/s11465-012-0313-8

Abstract:

Hydrogen peroxide (H2O2) is a kind of ideal green propellant./sub>O2.in H2O2 solutions, which has a great effect on wear, the decomposition and/sub>O2 solutions./sub>O2 solutions.

Keywords： hydrogen peroxide     wear     corrosion     wear mechanism    

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Title Author Date Type Operation

Preparation and characterization of SO42-/TiO2 and S2O82-/TiO2 catalysts

MA Xuedan, GUO Daishi, JIANG Qizhong, MA Zifeng, MA Zhengfei, YE Weidong, LI Chunbo

Journal Article

Rh2O3/hexagonal CePO4 nanocatalysts for N2O decomposition

Huan Liu, Zhen Ma

Journal Article

Effect of biochar amendment on soil’s retention capacity for estrogenic hormones from poultry manure

Sukhjot MANN, Zhiming QI, Shiv O. PRASHER, Lanhai LI, Dongwei GUI, Qianjing JIANG

Journal Article

Performance and mechanism of carbamazepine removal by FeS-SO process: experimental investigation and DFT calculations

Journal Article

Correlations for estimating solar radiation using sunshine hours and temperature measurement in Osogbo, Osun State, Nigeria

O. S. OHUNAKIN, M. S. ADARAMOLA, O. M. OYEWOLA, R. O. FAGBENLE

Journal Article

Inexpensive synthesis of a high-performance Fe

Imran, Muhammad S. Haider, Hee Taik Kim

Journal Article

The stabilization effect of Al2O3 on unconventional Pb/SiO2 catalyst

Journal Article

A multi-integrated approach on toxicity effects of engineered TiO

PAIXÃO,Liliana MOITA,Luis SILVA,Mário S.DINIZ,Joana LOURENÇO,Isabel PERES,Luisa CASTRO,José Brito CORREIA,Joana PEREIRA,Isabel FERREIRA,António

Journal Article

Development of H2O/CO2 co-electrolysis in solid oxide electrolysis cell

Fan Hui,Song Shidong,Han Minfang

Journal Article

Accurate quantification of 3′-terminal 2′-O-methylated small RNAs by utilizing oxidative deep sequencing

Journal Article

Spray Preparation, Microstructure and Properties of Al2O3-MxO Hard -

Wang Biao,Wang Yudong,Li Huiling,Zhang Zihua

Journal Article

Optimization of the O/HO process with response surface methodology for pretreatment of mother liquor

Journal Article

Thermodynamic Analysis and Reaction Model of Combustion Synthesis in Al-Cr2O3 Systemwith Al2O3 and Cr2O3 Diluents

Zhang Yancheng,Pan Ye,Zhang Chuan

Journal Article

Effect of TiO 2 loading on the activity of V/TiO 2 -Al 2 O 3 in the catalytic oxidehydrogenation of ethylbenzene

Xiaohong LI, Wenying LI,

Journal Article

Study on tribological and electrochemistry properties of metal materials in H2O2 solutions

Chengqing YUAN, Li YU, Jian LI, Xinping YAN

Journal Article