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Establishing two-stage interaction between fly ash and NaOH by X-ray and infrared analyses

Bhagwanjee JHA,Nevin KOSHY,Devendra Narain SINGH

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 216-221 doi: 10.1007/s11783-014-0630-8

Abstract: The interaction of the fly ash and NaOH, in an open reflux hydrothermal system at 100°C, has been explored by several researchers and formation of fly ash zeolites has been confirmed based on the X-ray diffraction analysis of the residues. However, this method does not reveal much about the characteristic transitions (viz. elemental, electro-negativity and cation exchange capacity) of the residues. In this situation, resorting to Fourier transform-infrared radiation (FT-IR) spectroscopy on the residues obtained from two-stage hydrothermal treatment process, described in this manuscript, appears to be a novel idea to establish transitions in chemical bonds (viz., -Si-OH-Al-, OH-Na, OH-Al-), crystallinity and cation exchange capacity of these residues. Based on extensive studies, it has been demonstrated that FT-IR spectroscopy is extremely useful for 1) detection of chemical bonds in the residues, 2) evaluation of zeolites in the residues and 3) also establishing the superiority of the two-stage interaction of the fly ash with NaOH for synthesizing better fly ash zeolites (viz., Na-P1 and Hydroxysodalte) as compared to those obtained from the conventional single-stage treatment of the fly ash.

Keywords： hydrothermal treatment     alkali activation     fly ash zeolites     X-ray diffraction (XRD) and Fourier transform-infrared    

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Layered alkali titanates (ATiO): possible uses for energy/environment issues

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 631-655 doi: 10.1007/s11708-021-0776-6

Abstract: Uses of layered alkali titanates (A2TinO2nalkali titanates of various structural types and compositions are regarded as a class of nanostructuredcompared with commonly known titanium dioxides (anatase and rutile), materials design based on layered alkaliThe ion exchange ability of layered alkali titanate is used for the collection of metal ions from waterThese possible materials design made layered alkali titanates promising for energy (including catalysis

Keywords： layered alkali titanates     photocatalysis     hydrogen evdution     metal ions collection    

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Alkali-silica Reaction and Alkali-carbonate Reaction

Tang Mingshu

Strategic Study of CAE 2000, Volume 2, Issue 1,   Pages 34-40

Abstract:

Alkali-aggregate reaction (AAR) may be divided into two kinds： alkali-silica reaction (ASR) and alkali-carbonateThe chemical reaction between the reactive aggregate and alkali causes serious expansion and resultsFor ASR, the prime essential is the crystallinity of silica, which causes the rocks to display alkalicryptocrystalline, microcrystalline, glassy and strained silica, cristobalite, tridymite, etc. display high alkali

Keywords： alkali     aggregate     silica     carbonate     concrete deterioration     mechanism    

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The development of ultralightweight expanded perlite-based thermal insulation panel using alkali activator

Damla Nur ÇELİK; Gökhan DURMUŞ

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1486-1499 doi: 10.1007/s11709-022-0881-6

Abstract: In addition, an alkali activator solution was used as a binder in the mixtures.

Keywords： expanded perlite     alkali activator     thermal insulation panel     thermal conductivity    

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Utilization of alkali-activated copper slag as binder in concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 773-780 doi: 10.1007/s11709-021-0722-z

Abstract: This study was focused on developing concrete using alkali-activated copper slag (AACS) as a binder.The properties of alkali-activated copper slag concrete (AACSC) were compared with portland cement concretehydration products of AACSC were not identified in XRD patterns, whereas, in FTIR spectra of AACSC some alkali-activated

Keywords： binder     concrete     mechanical properties     mineralogy     workability    

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Enhanced activation of peroxymonosulfate by CNT-TiO

Xuemin Hao, Guanlong Wang, Shuo Chen, Hongtao Yu, Xie Quan

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1161-0

Abstract: In this work, a UV-light assisted peroxymonosulfate (PMS) activation system was constructed with theirradiation, the photoinduced electrons generated from TiO2 could be continuously transferred to CNT for the activationcatalytic performance was ascribed to the introduction of photoinduced electrons, which could enhance the activation

Keywords： Peroxymonosulfate activation     Carbon nanotubes     TiO2     Water treatment    

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Hierarchical porous carbon derived from one-step self-activation of zinc gluconate for symmetric supercapacitors

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 387-394 doi: 10.1007/s11705-022-2250-3

Abstract: straightforward and effective strategy is presented for producing highly porous carbons via a self-activation

Keywords： self-activation     zinc organic salts     abundant mesopores     symmetric supercapacitor     liquid electrolyte    

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Enhanced performance of oxygen vacancies on CO adsorption and activation over different phases of ZrO

Frontiers in Energy 2023, Volume 17, Issue 4,   Pages 545-554 doi: 10.1007/s11708-023-0867-7

Abstract: The effect of oxygen vacancies on the adsorption and activation of CO2 on the surface of differentThe calculations show that the oxygen vacancies contribute greatly to both the adsorption and activationFurthermore, the activation of CO2 on the ZrO2 surface where oxygen vacancies areThis finding demonstrates that the presence of oxygen vacancies promotes the activation of CO2

Keywords： CO2 activation     oxygen vacancies     ZrO2     different phases    

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Hydration Characteristics and Microstructure of Alkali-Activated Slag Concrete: A Review Review

Qiang Fu,Mengxin Bu,Zhaorui Zhang,Wenrui Xu,Qiang Yuan,Ditao Niu

Engineering 2023, Volume 20, Issue 1,   Pages 162-179 doi: 10.1016/j.eng.2021.07.026

Abstract:

Alkali-activated slag concrete (AASC) is a new green building material.The influences of the slag composition, the type and dosage of the alkali activator, and the curing conditions

Keywords： Alkali-activated slag concrete     hydration characteristics     pore structure     interfacial transition zone     Microstructure    

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A density functional theory study of methane activation on MgO supported NiM cluster: role of M on C–Hactivation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1485-1492 doi: 10.1007/s11705-022-2169-8

Abstract: Methane activation is a pivotal step in the application of natural gas converting into high-value addedIn present work, methane activation on MgO supported Ni–M (M = Fe, Co, Cu, Pd, Pt) cluster was exploredDoping elements of the same period in Ni cluster, such as Fe, Co and Cu, for C–H bond activation followsIn addition, doping the elements of the same family, like Pd and Pt, for CH4 activation isConsequently, C–H bond activation demands a lower energy barrier on Ni–Pt cluster.

Keywords： CH4 dissociation     Ni–M     C–H bond activation     charge transfer    

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Optimal dynamic emergency reserve activation using spinning, hydro and demand-side reserves

S. Surender REDDY,P. R. BIJWE,A. R. ABHYANKAR

Frontiers in Energy 2016, Volume 10, Issue 4,   Pages 409-423 doi: 10.1007/s11708-016-0431-9

Abstract: This paper proposes an optimal dynamic reserve activation plan after the occurrence of an emergency situationThe proposed reserve activation approaches are solved using the genetic algorithm, and some of the simulationThese results demonstrate the advantage of the proposed integrated/dynamic reserve activation plan over

Keywords： demand-side reserves     dynamic reserve activation approach     hydro power units     post contingency     sequentialreserve activation approach     spinning reserves    

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The Decarbonization of Construction—How Can Alkali-Activated Materials Contribute?

John L. Provis,Susan A. Bernal,Zuhua Zhang,

Engineering doi: 10.1016/j.eng.2023.09.014

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Tumor-derived exosomes induce initial activation by exosomal CD19 antigen but impair the function of

Frontiers of Medicine doi: 10.1007/s11684-023-1010-1

Abstract: Tumor-derived exosomes induce initial activation by exosomal CD19 antigen but impair the function of

Keywords： exosomes induce activation     impair function CD19     exosomal CD19 antigen    

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Application of Underground Fracture Connection Monitoring in Anpeng Alkali Mine

Qi Tiexin,Liu Jianzhong,Qi Guilin,Dong Feng

Strategic Study of CAE 2006, Volume 8, Issue 7,   Pages 63-67

Abstract: methodologies, and results of monitoring primary fractures connecting to the injection well in Anpeng Alkaliinjection well at a depth of over 1 000 meters, which makes it possible for continuous water injection and alkalisolution production in Anpeng Alkali Mine.

Keywords： Anpeng Alkali Mine     wet process for alkali extraction     underground fracture connection     leveling survey    

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Modeling of alkali-silica reaction in concrete: a review

J.W. PAN, Y.T. FENG, J.T. WANG, Q.C. SUN, C.H. ZHANG, D.R.J. OWEN

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1,   Pages 1-18 doi: 10.1007/s11709-012-0141-2

Abstract: This paper presents a comprehensive review of modeling of alkali-silica reaction (ASR) in concrete.

Keywords： alkali-silica reaction (ASR)     modeling     concrete     mesoscopic     macroscopic    

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Title Author Date Type Operation

Establishing two-stage interaction between fly ash and NaOH by X-ray and infrared analyses

Bhagwanjee JHA,Nevin KOSHY,Devendra Narain SINGH

Journal Article

Layered alkali titanates (ATiO): possible uses for energy/environment issues

Journal Article

Alkali-silica Reaction and Alkali-carbonate Reaction

Tang Mingshu

Journal Article

The development of ultralightweight expanded perlite-based thermal insulation panel using alkali activator

Damla Nur ÇELİK; Gökhan DURMUŞ

Journal Article

Utilization of alkali-activated copper slag as binder in concrete

Journal Article

Enhanced activation of peroxymonosulfate by CNT-TiO

Xuemin Hao, Guanlong Wang, Shuo Chen, Hongtao Yu, Xie Quan

Journal Article

Hierarchical porous carbon derived from one-step self-activation of zinc gluconate for symmetric supercapacitors

Journal Article

Enhanced performance of oxygen vacancies on CO adsorption and activation over different phases of ZrO

Journal Article

Hydration Characteristics and Microstructure of Alkali-Activated Slag Concrete: A Review

Qiang Fu,Mengxin Bu,Zhaorui Zhang,Wenrui Xu,Qiang Yuan,Ditao Niu

Journal Article

A density functional theory study of methane activation on MgO supported NiM cluster: role of M on C–Hactivation

Journal Article

Optimal dynamic emergency reserve activation using spinning, hydro and demand-side reserves

S. Surender REDDY,P. R. BIJWE,A. R. ABHYANKAR

Journal Article

The Decarbonization of Construction—How Can Alkali-Activated Materials Contribute?

John L. Provis,Susan A. Bernal,Zuhua Zhang,

Journal Article

Tumor-derived exosomes induce initial activation by exosomal CD19 antigen but impair the function of

Journal Article

Application of Underground Fracture Connection Monitoring in Anpeng Alkali Mine

Qi Tiexin,Liu Jianzhong,Qi Guilin,Dong Feng

Journal Article

Modeling of alkali-silica reaction in concrete: a review

J.W. PAN, Y.T. FENG, J.T. WANG, Q.C. SUN, C.H. ZHANG, D.R.J. OWEN

Journal Article