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Zirconium-Based Porous Hybrid Materials and Their Applications in Catalysis and Separation
Zirconium-Based Porous Hybrid Materials and Their Applications in Catalysis and Separation
Zirconium-Based Porous Hybrid Materials and Their Applications in Catalysis and Separation

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105315
ISBN  
9798270226299
DDC  
540
저자명  
Su, Shengyi.
서명/저자  
Zirconium-Based Porous Hybrid Materials and Their Applications in Catalysis and Separation
발행사항  
[Sl] : Northwestern University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
208 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
주기사항  
Advisor: Farha, Omar K.;Gianneschi, Nathan C.
학위논문주기  
Thesis (Ph.D.)--Northwestern University, 2025.
초록/해제  
요약Zirconium stands out as a highly versatile element for the design of robust organic-inorganic and hybrid materials based on its specific features of strong oxophilicity, high charge density, and exceptional corrosion resistance. Based on the Zr6O8 core, the molecular assembly of the widely studied hexa-nuclear zirconium-oxo cluster stands out as a fundamental structural motif. The high connectivity and modularity of Zr6 clusters enable high chemical and thermal stability. However, the intrinsic reactivity of Zr6 clusters predisposes them to uncontrolled olation and oxolation reactions, which lead to irreversible aggregation and the formation of amorphous zirconia. Such aggregation phenomenon not only limits the stability and functionality of discrete clusters but also constrains the development of Zr-based hybrid materials where cluster integrity and accessibility are crucial for catalytic and adsorptive applications.To address this challenge, this dissertation investigates porous hybrid materials as a platform to stabilize and integrate Zr6 clusters while retaining their reactivity and structural identity. Porous materials offer confined environments and high internal surface areas that can spatially isolate reactive species, thereby suppressing undesired condensation. To achieve these goals, two major strategies are deployed here. The first strategy employs porous organic polymers encapsulation, where intrinsically microporous and processable organic matrices confine Zr6 clusters within nanoscale cavities, preventing their aggregation while allowing flexible material shaping. The second strategy leverages metal-organic framework (MOF) crystallization, in which Zr6 clusters act as the secondary building unit (SBU) coordinatively linked by oxygen-donor ligands to form crystalline and porous frameworks. Together, these design approaches enable molecular to nanoscale control over cluster dispersion, porosity, and surface functionality.The subsequent chapters detail the realization and application of these strategies. Chapter 2 introduces Zr6 PIM composites that leverage the microporosity and processability of polymers of intrinsic microporosity (PIMs) to confine Zr6 clusters for catalytic hydrolysis of organophosphorus compounds. Chapter 3 presents a porous polymer coated Zr-MOF system, where porous synthetic allomelanin coatings confer hierarchical porosity and tunable interface chemistry for hydrocarbon separation. Chapter 4 then investigates the structural polymorphism of Zr-muconate frameworks to elucidate linker geometry governed topology and phase transitions. Chapter 5 extends these insights to mixed-linker synthesis, achieving precise aperture geometry customization for kinetic hexane isomer separation. Collectively, these studies demonstrate how molecular-level cluster stabilization and framework design converge to produce functional porous materials.This work aims to establish a unified design framework for integrating Zr6 cluster into stable, accessible, and tunable porous architectures. By bridging polymer chemistry, coordination chemistry, and materials chemistry, it advances the understanding of Zr6 cluster behavior across multiple length scales and introduces practical routes toward reactive, processable, tunable, and durable Zr6-based hybrid porous materials. The concepts developed in this dissertation are applicable to the broader field of porous materials, providing generalizable principles for controlling aggregation, enhancing reactivity and selectivity, and contributing to the design and discovery of next-generation catalytic and separation technologies based on Zr cluster chemistry.
일반주제명  
Chemistry
일반주제명  
Inorganic chemistry
일반주제명  
Organic chemistry
키워드  
Zirconium stands
키워드  
Hybrid materials
키워드  
Hydrocarbon separation
키워드  
Cluster chemistry
키워드  
Porous materials
기타저자  
Northwestern University Chemistry
기본자료저록  
Dissertations Abstracts International. 87-06B.
전자적 위치 및 접속  
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MARC

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■006m          o    d                
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■020    ▼a9798270226299
■035    ▼a(MiAaPQ)AAI32285999
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a540
■1001  ▼aSu,  Shengyi.
■24510▼aZirconium-Based  Porous  Hybrid  Materials  and  Their  Applications  in  Catalysis  and  Separation
■260    ▼a[Sl]▼bNorthwestern  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a208  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-06,  Section:  B.
■500    ▼aAdvisor:  Farha,  Omar  K.;Gianneschi,  Nathan  C.
■5021  ▼aThesis  (Ph.D.)--Northwestern  University,  2025.
■520    ▼aZirconium  stands  out  as  a  highly  versatile  element  for  the  design  of  robust  organic-inorganic  and  hybrid  materials  based  on  its  specific  features  of  strong  oxophilicity,  high  charge  density,  and  exceptional  corrosion  resistance.  Based  on  the  Zr6O8  core,  the  molecular  assembly  of  the  widely  studied  hexa-nuclear  zirconium-oxo  cluster  stands  out  as  a  fundamental  structural  motif.  The  high  connectivity  and  modularity  of  Zr6  clusters  enable  high  chemical  and  thermal  stability.  However,  the  intrinsic  reactivity  of  Zr6  clusters  predisposes  them  to  uncontrolled  olation  and  oxolation  reactions,  which  lead  to  irreversible  aggregation  and  the  formation  of  amorphous  zirconia.  Such  aggregation  phenomenon  not  only  limits  the  stability  and  functionality  of  discrete  clusters  but  also  constrains  the  development  of  Zr-based  hybrid  materials  where  cluster  integrity  and  accessibility  are  crucial  for  catalytic  and  adsorptive  applications.To  address  this  challenge,  this  dissertation  investigates  porous  hybrid  materials  as  a  platform  to  stabilize  and  integrate  Zr6  clusters  while  retaining  their  reactivity  and  structural  identity.  Porous  materials  offer  confined  environments  and  high  internal  surface  areas  that  can  spatially  isolate  reactive  species,  thereby  suppressing  undesired  condensation.  To  achieve  these  goals,  two  major  strategies  are  deployed  here.  The  first  strategy  employs  porous  organic  polymers  encapsulation,  where  intrinsically  microporous  and  processable  organic  matrices  confine  Zr6  clusters  within  nanoscale  cavities,  preventing  their  aggregation  while  allowing  flexible  material  shaping.  The  second  strategy  leverages  metal-organic  framework  (MOF)  crystallization,  in  which  Zr6  clusters  act  as  the  secondary  building  unit  (SBU)  coordinatively  linked  by  oxygen-donor  ligands  to  form  crystalline  and  porous  frameworks.  Together,  these  design  approaches  enable  molecular  to  nanoscale  control  over  cluster  dispersion,  porosity,  and  surface  functionality.The  subsequent  chapters  detail  the  realization  and  application  of  these  strategies.  Chapter  2  introduces  Zr6  PIM  composites  that  leverage  the  microporosity  and  processability  of  polymers  of  intrinsic  microporosity  (PIMs)  to  confine  Zr6  clusters  for  catalytic  hydrolysis  of  organophosphorus  compounds.  Chapter  3  presents  a  porous  polymer  coated  Zr-MOF  system,  where  porous  synthetic  allomelanin  coatings  confer  hierarchical  porosity  and  tunable  interface  chemistry  for  hydrocarbon  separation.  Chapter  4  then  investigates  the  structural  polymorphism  of  Zr-muconate  frameworks  to  elucidate  linker  geometry  governed  topology  and  phase  transitions.  Chapter  5  extends  these  insights  to  mixed-linker  synthesis,  achieving  precise  aperture  geometry  customization  for  kinetic  hexane  isomer  separation.  Collectively,  these  studies  demonstrate  how  molecular-level  cluster  stabilization  and  framework  design  converge  to  produce  functional  porous  materials.This  work  aims  to  establish  a  unified  design  framework  for  integrating  Zr6  cluster  into  stable,  accessible,  and  tunable  porous  architectures.  By  bridging  polymer  chemistry,  coordination  chemistry,  and  materials  chemistry,  it  advances  the  understanding  of  Zr6  cluster  behavior  across  multiple  length  scales  and  introduces  practical  routes  toward  reactive,  processable,  tunable,  and  durable  Zr6-based  hybrid  porous  materials.  The  concepts  developed  in  this  dissertation  are  applicable  to  the  broader  field  of  porous  materials,  providing  generalizable  principles  for  controlling  aggregation,  enhancing  reactivity  and  selectivity,  and  contributing  to  the  design  and  discovery  of  next-generation  catalytic  and  separation  technologies  based  on  Zr  cluster  chemistry.
■590    ▼aSchool  code:  0163.
■650  4▼aChemistry
■650  4▼aInorganic  chemistry
■650  4▼aOrganic  chemistry
■653    ▼aZirconium  stands
■653    ▼aHybrid  materials
■653    ▼aHydrocarbon  separation
■653    ▼aCluster  chemistry
■653    ▼aPorous  materials
■690    ▼a0485
■690    ▼a0488
■690    ▼a0490
■71020▼aNorthwestern  University▼bChemistry.
■7730  ▼tDissertations  Abstracts  International▼g87-06B.
■790    ▼a0163
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360171▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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