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Renewable Solar Thermochemical Nh3 Production Cycle: Materials Characterization, Cycles Investigation And Reactor Modeling
Renewable Solar Thermochemical Nh3 Production Cycle: Materials Characterization, Cycles Investigation And Reactor Modeling
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105509
- ISBN
- 9798263328948
- DDC
- 540
- 저자명
- Nguyen, Nhu.
- 서명/저자
- Renewable Solar Thermochemical Nh3 Production Cycle: Materials Characterization, Cycles Investigation And Reactor Modeling
- 발행사항
- [Sl] : Georgia Institute of Technology, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 204 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Loutzenhiser, Peter G.
- 학위논문주기
- Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
- 초록/해제
- 요약Sunlight is an abundant, effective and carbon-neutral energy source. Investigation of ways to effectively utilize concentrated solar thermal energy is crucial for efforts to decarbonize industry. These tasks involve methods to produce chemical commodities from concentrating solar irradiation and examining effective ways to transfer and store thermal energy. NH3 production from air and H2 via a two-stage solar thermochemical cycle without CO2 emission was considered, encompassing: (1) air separation to produce N2 and (2) NH3 synthesis from H2 and N2. A- and B-site substituted and unsubstituted SrFeO3 samples used for air separation were screened via thermogravimetry to characterize oxygen capacity and chemical stability under elevated temperatures up to 1300 °C under various oxygen partial pressure and in the presence of common trace gases such as CO2 and H2O(v). Rate limiting mechanisms were investigated for reduction/oxidation reactions using a combination of isothermal and non-isothermal thermogravimetry. Material characterization results for perovskites oxides were used as inputs for investigation of a packed particle bed reactor design for concentrating solar thermochemical air separation applications at intermediate temperature of 600 °C. Co3Mo3N/Co6Mo6N reduction and nitridation reactions to facilitate NH3 synthesis were characterized to investigate the material reduction/nitridation extents under various nitrogen partial pressure. Produced NH3 was quantified using in-situ liquid conductivity measurements coupled with mass spectrometry. Complete regeneration of Co3Mo3N from Co6Mo6N was achieved at conditions of 700 °C under 25 to 75% H2/N2. H2-pressure swings were observed to increase NH3 production during Co3Mo3N reduction. These results represent the first successful demonstration and characterization of non-catalytic NH3 production through chemical looping with metal nitrides and will inform subsequent development of NH3 synthesis chemical looping reactors. Another crucial effort to integrate concentrated solar thermal energy to decarbonize industrial processes is to effectively transfer and store thermal energy via particulate media. Mechanical properties of particles used as heat transfer and storage media were measured at temperatures up to 800 °C for application in concentrated solar thermal energy transfer and storage. These mechanical properties were utilized to investigate pseudo-viscous fluid properties of dense granular flow at various elevated temperatures. Utilizing the pseudo-viscous fluid properties to model bulk behavior of granular flow offered significant reduction in computational load compared to the current practice of using the discrete elemental method.
- 일반주제명
- Crystal structure
- 일반주제명
- Heat transfer
- 일반주제명
- Reactors
- 일반주제명
- Mass spectrometry
- 일반주제명
- Solar energy
- 일반주제명
- Thermal energy
- 일반주제명
- Viscosity
- 일반주제명
- Gases
- 일반주제명
- Oxidation
- 일반주제명
- Fluid dynamics
- 일반주제명
- Carbon
- 일반주제명
- Energy storage
- 일반주제명
- Heat conductivity
- 일반주제명
- Energy consumption
- 일반주제명
- Radiation
- 일반주제명
- Sun
- 일반주제명
- Crystallography
- 일반주제명
- Alternative energy
- 일반주제명
- Analytical chemistry
- 일반주제명
- Fluid mechanics
- 일반주제명
- Thermodynamics
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105509
■006m o d
■007cr#unu||||||||
■020 ▼a9798263328948
■035 ▼a(MiAaPQ)AAI32308074
■035 ▼a(MiAaPQ)GeorgiaTech78617
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a540
■1001 ▼aNguyen, Nhu.
■24510▼aRenewable Solar Thermochemical Nh3 Production Cycle: Materials Characterization, Cycles Investigation And Reactor Modeling
■260 ▼a[Sl]▼bGeorgia Institute of Technology▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a204 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Loutzenhiser, Peter G.
■5021 ▼aThesis (Ph.D.)--Georgia Institute of Technology, 2024.
■520 ▼aSunlight is an abundant, effective and carbon-neutral energy source. Investigation of ways to effectively utilize concentrated solar thermal energy is crucial for efforts to decarbonize industry. These tasks involve methods to produce chemical commodities from concentrating solar irradiation and examining effective ways to transfer and store thermal energy. NH3 production from air and H2 via a two-stage solar thermochemical cycle without CO2 emission was considered, encompassing: (1) air separation to produce N2 and (2) NH3 synthesis from H2 and N2. A- and B-site substituted and unsubstituted SrFeO3 samples used for air separation were screened via thermogravimetry to characterize oxygen capacity and chemical stability under elevated temperatures up to 1300 °C under various oxygen partial pressure and in the presence of common trace gases such as CO2 and H2O(v). Rate limiting mechanisms were investigated for reduction/oxidation reactions using a combination of isothermal and non-isothermal thermogravimetry. Material characterization results for perovskites oxides were used as inputs for investigation of a packed particle bed reactor design for concentrating solar thermochemical air separation applications at intermediate temperature of 600 °C. Co3Mo3N/Co6Mo6N reduction and nitridation reactions to facilitate NH3 synthesis were characterized to investigate the material reduction/nitridation extents under various nitrogen partial pressure. Produced NH3 was quantified using in-situ liquid conductivity measurements coupled with mass spectrometry. Complete regeneration of Co3Mo3N from Co6Mo6N was achieved at conditions of 700 °C under 25 to 75% H2/N2. H2-pressure swings were observed to increase NH3 production during Co3Mo3N reduction. These results represent the first successful demonstration and characterization of non-catalytic NH3 production through chemical looping with metal nitrides and will inform subsequent development of NH3 synthesis chemical looping reactors. Another crucial effort to integrate concentrated solar thermal energy to decarbonize industrial processes is to effectively transfer and store thermal energy via particulate media. Mechanical properties of particles used as heat transfer and storage media were measured at temperatures up to 800 °C for application in concentrated solar thermal energy transfer and storage. These mechanical properties were utilized to investigate pseudo-viscous fluid properties of dense granular flow at various elevated temperatures. Utilizing the pseudo-viscous fluid properties to model bulk behavior of granular flow offered significant reduction in computational load compared to the current practice of using the discrete elemental method.
■590 ▼aSchool code: 0078.
■650 4▼aCrystal structure
■650 4▼aHeat transfer
■650 4▼aReactors
■650 4▼aTransmission electron microscopy
■650 4▼aMass spectrometry
■650 4▼aSolar energy
■650 4▼aThermal energy
■650 4▼aViscosity
■650 4▼aGases
■650 4▼aOxidation
■650 4▼aFluid dynamics
■650 4▼aCarbon
■650 4▼aThermogravimetric analysis
■650 4▼aEnergy storage
■650 4▼aHeat conductivity
■650 4▼aEnergy consumption
■650 4▼aRadiation
■650 4▼aSun
■650 4▼aCrystallography
■650 4▼aScanning electron microscopy
■650 4▼aAlternative energy
■650 4▼aAnalytical chemistry
■650 4▼aFluid mechanics
■650 4▼aThermodynamics
■690 ▼a0363
■690 ▼a0486
■690 ▼a0204
■690 ▼a0348
■71020▼aGeorgia Institute of Technology.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0078
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360335▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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