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Benzenesulfonic acid-grafted UIO-66 with improved hydrophobicity as a stable Brønsted acid catalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1389-1398 doi: 10.1007/s11705-022-2285-5

Abstract: Here, we report a facile strategy to introduce the macromolecular acid group to UIO-66 to improve theIn detail, UIO-66−PhSO3H was obtained by grafting benzenesulfonic acid on the surface of thepristine UIO-66 to introduce the hydrophobicity, as well as the Brønsted acidity, then assessed using

Keywords： metal−organic frameworks (MOFs)     UIO-66     hydrolysis of cyclohexyl acetate     hydrophobicity     Brønsted acidity    

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Effects of support acidity on the reaction mechanisms of selective catalytic reduction of NO by CH

Shicheng XU, Junhua LI, Dong YANG, Jiming HAO

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 186-193 doi: 10.1007/s11783-009-0016-5

Abstract: Higher ratios of Br?nsted acid sites to Lewis acid sites would lead to stronger oxidation of methane and then could facilitateStrong Br?nsted acid sites would not necessarily lead to better catalytic performance, however, since the active

Keywords： selective catalytic reduction (SCR)     nitric oxide (NO)     methane     support acidity     Br?nsted acid sites     NOy species    

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Biodiesel production by the transesterification of cottonseed oil by solid acid catalysts

CHEN He, PENG Baoxiang, WANG Dezheng, WANG Jinfu

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 11-15 doi: 10.1007/s11705-007-0003-y

Abstract: The solid acid catalysts showed more better adaptability than solid base catalysts when the oil has highIR spectral analysis of absorbed pyridine on the samples showed that there were Lewis and BrØnsted acidsites on the catalysts.

Keywords： BrØnsted     reaction     presence     cottonseed     biodiesel    

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Study on extraction of thiophene from model gasoline with br?nsted acidic ionic liquids

Xiaomeng WANG, Mingjuan HAN, Hui WAN, Cao YANG, Guofeng GUAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 107-112 doi: 10.1007/s11705-010-0539-0

Abstract: Br?nsted acidic ionic liquids (ILs), -methylimidazole hydrogen sulfate ([HMIm]HSO ) and -methylpyrrolidone

Keywords： br?nsted ionic liquids     model gasoline     thiophene     extraction     density functional theory    

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Ionic liquid mediated esterification of alcohol with acetic acid

Beilei ZHOU, Yanxiong FANG, Hao GU, Saidan ZHANG, Baohua HUANG, Kun ZHANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 211-214 doi: 10.1007/s11705-009-0054-3

Abstract: Highly efficient esterification of alcohols with acetic acid by using a Br?nsted acidic ionic liquid, i.e., 1-methyl-2-pyrrolidonium hydrogen sulfate ([Hnmp]HSO ), as catalyst

Keywords： ionic liquid     Br?nsted acid     esterification     catalyst    

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Catalytic ozonation performance and surface property of supported Fe

Zhendong YANG, Aihua LV, Yulun NIE, Chun HU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 451-456 doi: 10.1007/s11783-013-0509-0

Abstract: Fe O /Al O exhibited higher catalytic efficiency for the degradation of 2,4-dichlorophenoxyacetic acidand -chlorobenzoic acid aqueous solution with ozone.indicated that the physical and chemical properties of the catalyst supports especially their Lewis acidsites had a significant influence on the catalytic activity.In comparison with SiO , more Lewis acid sites existed on the surface of Al O , resulting in higher catalytic

Keywords： heterogeneous catalytic ozonation     iron oxides     supports     surface Lewis acid sites    

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Chemical deactivation of V

Xiaodong WU, Wenchao YU, Zhichun SI, Duan WENG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 420-427 doi: 10.1007/s11783-013-0489-0

Abstract: More importantly, potassium can reduce the Br?nsted acidity of catalysts and decrease the stability of Br?nsted acid sites significantly.

Keywords： V2O5-WO3/TiO2     potassium chloride     poisoning     reducibility     acidsites    

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G-quadruplex formation of oligonucleotides containing ALS and FTD related GGGGCC repeat

Jasna Brčić,Janez Plavec

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2,   Pages 222-237 doi: 10.1007/s11705-016-1556-4

Abstract: scrutiny and optimization of nuclear magnetic resonance (NMR) spectroscopic properties with dG to 8Br-dGSingle dG to 8Br-dG substitution at position 21 and fine tuning of folding conditions facilitate folding

Keywords： G-quadruplex     GGGGCC     NMR     ALS/FTD     polymorphism    

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Ti incorporation in MCM-41 mesoporous molecular sieves using hydrothermal synthesis

Shengping WANG, Changqing MA, Yun SHI, Xinbin MA

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 95-103 doi: 10.1007/s11705-014-1405-2

Abstract: It was concluded that the Ti is incorporated into the framework of the MCM-41 and formed weak Lewis acidsites.In addition, the number of Ti(IV) sites increased as the amount of titanium increased.A large number of Ti(IV) sites coupled with the mesoporous structure and large pore diameters are favorable

Keywords： Ti-MCM-41     mesoporous molecular sieve     acid sites     transesterification     hydrothermal synthesis    

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Dual-functional sites for synergistic adsorption of Cr(VI) and Sb(V) by polyaniline-TiO hydrate: Adsorptionbehaviors, sites and mechanisms

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1526-7

Abstract:

• PANI/Ti(OH)n(4–n)+ exhibited excellent adsorption capacity and reusability.

Keywords： Polyaniline/TiO2     Chromium     Antimony     Adsorption     Desorption     Mechanism    

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Evaluation of the wind energy potential of two south west sites in Nigeria

Olaleye M. AMOO

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 237-246 doi: 10.1007/s11708-012-0201-2

Abstract: wind energy potential of Abeokuta (07°03'N, 03°19'E) and Ijebu-Ode (06°47'N, 03°58'E), two south west sitesIjebu-Ode was found to be the better of the two sites in terms of annual variation of mean wind speed

Keywords： wind potential     wind speed     wind power density     wind gust     turbulence intensity     Nigeria    

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Microwave-induced high-energy sites and targeted energy transition promising for efficient energy deployment

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 931-942 doi: 10.1007/s11708-021-0771-y

Abstract: Meanwhile, the dispersed microwave field energy concentrated in small sites, where local temperaturesIn particular, the discharge intensity, frequency, and high-energy sites were strengthened through theThe microwave-induced high-energy sites and targeted energy transition provide an important pathway for

Keywords： microwave discharge     high-energy sites     targeted-energy transition     morphology design     energy efficiency    

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Scale study of sites and pavilions for World Expo 2010

ZHOU Zhuoyan, CHEN Yi

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1,   Pages 102-106 doi: 10.1007/s11709-008-0012-z

Abstract: The scale of sites and pavilions for World Expo 2010 (Shanghai World Expo) mainly refers to the study

Keywords： pavilion     study     number     appropriate     design    

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On the monolayer dispersion behavior of Co3O4 on HZSM-5 support: designing applicable catalysts for selective catalytic reduction of nitrogen oxides by ammonia

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1741-1754 doi: 10.1007/s11705-023-2332-x

Abstract: It has been revealed that the quantities of surface active oxygen (O2–) and acidsites are crucial for the reaction, which can adsorb and activate NOx and NH3sub-monolayers or monolayers and in an amorphous state, which is favorable to generate the two kinds of active sitesdispersion capacity, possesses the most abundant active O2– species and acidic sites

Keywords： /ZSM-5     NOx-SCR by NH3     monolayer dispersion threshold effect     surface acidsites     surface active O2– anions    

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Solid-state NMR for metal-containing zeolites: From active sites to reaction mechanism

Xingling Zhao, Jun Xu, Feng Deng

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 159-187 doi: 10.1007/s11705-019-1885-1

Abstract: To understand the nature of metal active sites and the reaction mechanism over such catalysts is of greatsummarize recent developments and applications of SSNMR for exploring the structure and property of active sites

Keywords： metal-containing zeolites     solid-state NMR     active site     host-guest interaction     reaction mechanism    

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Title Author Date Type Operation

Benzenesulfonic acid-grafted UIO-66 with improved hydrophobicity as a stable Brønsted acid catalyst

Journal Article

Effects of support acidity on the reaction mechanisms of selective catalytic reduction of NO by CH

Shicheng XU, Junhua LI, Dong YANG, Jiming HAO

Journal Article

Biodiesel production by the transesterification of cottonseed oil by solid acid catalysts

CHEN He, PENG Baoxiang, WANG Dezheng, WANG Jinfu

Journal Article

Study on extraction of thiophene from model gasoline with br?nsted acidic ionic liquids

Xiaomeng WANG, Mingjuan HAN, Hui WAN, Cao YANG, Guofeng GUAN

Journal Article

Ionic liquid mediated esterification of alcohol with acetic acid

Beilei ZHOU, Yanxiong FANG, Hao GU, Saidan ZHANG, Baohua HUANG, Kun ZHANG

Journal Article

Catalytic ozonation performance and surface property of supported Fe

Zhendong YANG, Aihua LV, Yulun NIE, Chun HU

Journal Article

Chemical deactivation of V

Xiaodong WU, Wenchao YU, Zhichun SI, Duan WENG

Journal Article

G-quadruplex formation of oligonucleotides containing ALS and FTD related GGGGCC repeat

Jasna Brčić,Janez Plavec

Journal Article

Ti incorporation in MCM-41 mesoporous molecular sieves using hydrothermal synthesis

Shengping WANG, Changqing MA, Yun SHI, Xinbin MA

Journal Article

Dual-functional sites for synergistic adsorption of Cr(VI) and Sb(V) by polyaniline-TiO hydrate: Adsorptionbehaviors, sites and mechanisms

Journal Article

Evaluation of the wind energy potential of two south west sites in Nigeria

Olaleye M. AMOO

Journal Article

Microwave-induced high-energy sites and targeted energy transition promising for efficient energy deployment

Journal Article

Scale study of sites and pavilions for World Expo 2010

ZHOU Zhuoyan, CHEN Yi

Journal Article

On the monolayer dispersion behavior of Co3O4 on HZSM-5 support: designing applicable catalysts for selective catalytic reduction of nitrogen oxides by ammonia

Journal Article

Solid-state NMR for metal-containing zeolites: From active sites to reaction mechanism

Xingling Zhao, Jun Xu, Feng Deng

Journal Article