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Effects of Defects, Flexibility, and Ozone on Stability of Metal Organic Frameworks
Effects of Defects, Flexibility, and Ozone on Stability of Metal Organic Frameworks
Effects of Defects, Flexibility, and Ozone on Stability of Metal Organic Frameworks

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105507
ISBN  
9798263326098
DDC  
551.57
저자명  
Jamdade, Shubham.
서명/저자  
Effects of Defects, Flexibility, and Ozone on Stability of Metal Organic Frameworks
발행사항  
[Sl] : Georgia Institute of Technology, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
216 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Sholl, David S.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
초록/해제  
요약Metal−organic framework (MOF) materials are nanoporous materials whose crystalline character has made them attractive targets for synthesis of new materials and potential use in a diverse set of applications. To be commercially viable, MOFs should possess water stability because many industrial processes like gas separation and storage involve some amount of water. In this dissertation, to identify the high performing MOFs for OxygenHelium separations, we begin with high throughput computational screening of several thousand MOFs followed by water stability assessment of top performing MOFs for practical application. Most computational studies of MOFs consider these materials as defect free. Defects are ubiquitous in the real crystal structures of MOFs and can play strong roles in MOF water stability and subsequent degradation. Unfortunately, direct experimental detection and characterization of defects in MOFs are very challenging. We introduce a molecular simulation based approach that utilizes differences between experimentally observed and computationally predicted water stabilities of MOFs to deduce information on the presence of point defects in real materials. Further we investigate the degradation of amine functionalized adsorbents that play an important role in direct air capture (DAC) of CO2. Trace amount of atmospheric aggressive oxidants such as ozone can potentially degrade the adsorbent structure by reacting with amine sites and C-C double bonds. We use quantum chemistry calculations to examine the potential degradation of a prototypical amine-based adsorbent by ozone at a mechanistic level. Lastly, this dissertation illustrates the potential implications of diurnal variations of ambient conditions for the operation and optimization of a DAC process with process-level calculations for a specific adsorption-based process using amine-rich adsorbents. This approach highlights the necessity of understanding and adapting to real-world conditions for the successful deployment of DAC technology.
일반주제명  
Humidity
일반주제명  
Hydrocarbons
일반주제명  
Adsorbents
일반주제명  
Adsorption
일반주제명  
Water
일반주제명  
Heat
일반주제명  
Point defects
일반주제명  
Helium
일반주제명  
Zeolites
일반주제명  
Energy consumption
일반주제명  
Partial differential equations
일반주제명  
Sensitivity analysis
일반주제명  
Carbon
일반주제명  
Flexibility
일반주제명  
Geometry
일반주제명  
Atomic physics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aJamdade,  Shubham.
■24510▼aEffects  of  Defects,  Flexibility,  and  Ozone  on  Stability  of  Metal  Organic  Frameworks
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a216  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Sholl,  David  S.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2024.
■520    ▼aMetal−organic  framework  (MOF)  materials  are  nanoporous  materials  whose  crystalline  character  has  made  them  attractive  targets  for  synthesis  of  new  materials  and  potential  use  in  a  diverse  set  of  applications.  To  be  commercially  viable,  MOFs  should  possess  water  stability  because  many  industrial  processes  like  gas  separation  and  storage  involve  some  amount  of  water.  In  this  dissertation,  to  identify  the  high  performing  MOFs  for  OxygenHelium  separations,  we  begin  with  high  throughput  computational  screening  of  several  thousand  MOFs  followed  by  water  stability  assessment  of  top  performing  MOFs  for  practical  application.  Most  computational  studies  of  MOFs  consider  these  materials  as  defect  free.  Defects  are  ubiquitous  in  the  real  crystal  structures  of  MOFs  and  can  play  strong  roles  in  MOF  water  stability  and  subsequent  degradation.  Unfortunately,  direct  experimental  detection  and  characterization  of  defects  in  MOFs  are  very  challenging.  We  introduce  a  molecular  simulation  based  approach  that  utilizes  differences  between  experimentally  observed  and  computationally  predicted  water  stabilities  of  MOFs  to  deduce  information  on  the  presence  of  point  defects  in  real  materials.  Further  we  investigate  the  degradation  of  amine  functionalized  adsorbents  that  play  an  important  role  in  direct  air  capture  (DAC)  of  CO2.  Trace  amount  of  atmospheric  aggressive  oxidants  such  as  ozone  can  potentially  degrade  the  adsorbent  structure  by  reacting  with  amine  sites  and  C-C  double  bonds.  We  use  quantum  chemistry  calculations  to  examine  the  potential  degradation  of  a  prototypical  amine-based  adsorbent  by  ozone  at  a  mechanistic  level.  Lastly,  this  dissertation  illustrates  the  potential  implications  of  diurnal  variations  of  ambient  conditions  for  the  operation  and  optimization  of  a  DAC  process  with  process-level  calculations  for  a  specific  adsorption-based  process  using  amine-rich  adsorbents.  This  approach  highlights  the  necessity  of  understanding  and  adapting  to  real-world  conditions  for  the  successful  deployment  of  DAC  technology.
■590    ▼aSchool  code:  0078.
■650  4▼aHumidity
■650  4▼aHydrocarbons
■650  4▼aAdsorbents
■650  4▼aAdsorption
■650  4▼aWater
■650  4▼aHeat
■650  4▼aPoint  defects
■650  4▼aHelium
■650  4▼aZeolites
■650  4▼aEnergy  consumption
■650  4▼aPartial  differential  equations
■650  4▼aSensitivity  analysis
■650  4▼aCarbon
■650  4▼aFlexibility
■650  4▼aGeometry
■650  4▼aAtomic  physics
■690    ▼a0800
■690    ▼a0748
■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=T17360329▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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