Doctoral Dissertations


Yingxin He

Keywords and Phrases

Continuous-flow processes; Flow Chemistry; Heterogeneous catalyst; Hollow fiber membrane reactor


“Over the past decade, laboratory-scale continuous-flow processes have witnessed explosive developments and have attracted a great deal of interest with respect to the significance of the economic and environmentally-sustainable production of pharmaceuticals, fine chemicals, and agrochemicals, as well as upgrading of biomass feedstocks. Immobilization of organocatalysts and metal nanoparticles on continuous-flow microreactors offers an efficient catalytic system that exploits and enhances the advantages of both nanocatalysis and flow chemistry, the so-called flow nanocatalysis approach. Various approaches have been developed for the development of continuous-flow reactions including immobilization and subsequent anchoring of organocatalysts and metal nanoparticles within microfluidic reactors. However, many applications of microfluidic reactor-supported catalysts are still hampered by catalysts decomposition and their subsequent leaching from the microfluidic reactor to the product stream. This dissertation focuses on the investigation of structure/property/performance relations of a new catalytic membrane reactor platform for conducting catalytic reactions in a continuous-flow fashion. More specifically, it focuses on permanent immobilization/impregnation of organic or metal nanoparticle catalysts by covalent bonding within highly swelling-resistant asymmetric polymeric hollow fiber surfaces for non-leaching catalysis. This novel hollow fiber membrane reactor was used as a heterogeneous catalyst and continuous-flow reactor for various reactions including aldol and nitroaldol condensation, Heck coupling, tandem reaction of glucose and fructose to 5-hydroxymethylfurfural, and nitrophenol reduction reactions”--Abstract, page iv.


Rownaghi, Ali A.

Committee Member(s)

Liang, Xinhua
Rezaei, Fateme
Smith, Joseph D.
Kapila, Shubhender


Chemical and Biochemical Engineering

Degree Name

Ph. D. in Chemical Engineering


The authors would like to thank the University of Missouri Research Board (UMRB) for supporting this work.


Missouri University of Science and Technology

Publication Date

Fall 2018

Journal article titles appearing in thesis/dissertation

  • Direct Aldol and Nitroaldol Condensation in an Aminosilane-Grafted Si/Zr/Ti Composite Hollow Fiber as a Heterogeneous Catalyst and Continuous Flow Reactor”
  • Engineering Porous Polymer Hollow Fiber Microfluidic Reactors for Sustainable C-H Functionalization
  • Aminosilane-grafted SiO2-ZrO2 Polymer Hollow Fibers as Bifunctional Microfluidic Reactor for Tandem Reaction of Glucose and Fructose to 5-Hydroxymethylfurfural
  • A Pd-immobilized aminosilane-grafted SiO2/SiO2-TiO2 composite hollow fiber as a heterogeneous catalyst and continuous flow reaction in the degradation of 4-nitrophenol


xvi, 169 pages

Note about bibliography

Includes bibliographic references.


© 2018 Yingxin He, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Thesis Number

T 12019

Electronic OCLC #