서브메뉴
검색
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
- Porous materials
- 기타저자
- Northwestern University Chemistry
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017360171
■00520260202105315
■006m o d
■007cr#unu||||||||
■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.


