Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 99 for “"MFI"”.
-
Hydrothermal stability of hierarchically-structured two-dimensional MFI zeolite nanosheets
… of hierarchically-structured two-dimensional MFI zeolite nanosheets in the structural and catalytic stability investigations explored in this dissertation. The nanostructural evolution of purely-siliceous nanosheets in presence of water under different atmospheres was studied via a thorough …
-
Fabrication of Zeolite MFI Membranes on Low Cost Polymer Supports
… with outstanding separation performance. Zeolite MFI membranes have been demonstrated for xylene and butane isomer separations with high separation factors and permeances. However, high cost and scale-up difficulty prevent the commercialization of MFI membranes in industries. This dissertation …
-
Water selective MFI zeolite membranes for application in the Fischer Tropsch Synthesis
… using the MaxwellStefan (MS) formulation. MFI zeolite membranes were synthesised on a-alumina supports, of varying Si/ Al ratio. Two synthesis techniques were used: viz. with and without the assistance of structure directing agents. The membrane physical properties were characterised by SEM …
-
Investigating the adsorption and transport of water in MFI zeolite pores for water desalination
… mechanisms of water adsorption and transport in MFI-type zeolite pores through experimentation. Water adsorption on the surface and inside of the pore network was characterized by thermogravimetric analysis for varying Si/Al ratio zeolites. We estimated that the pore volume filled is -71% for a …
-
Hydrocracking of n-C16 over MFI Zeolite Nano-sheets - Effect of the Si/Al Ratio
The combination of MFI zeolite nano-sheets with competitive adsorption of water (H2O) in hydrocracking of long-chain paraffins presents a promising opportunity to produce diesel with high yield and with high cetane number. Thus, in wet hydrocracking of a long-chain paraffin (n-hexadecane (n-C16)) …
-
Platinum Nanoparticles to Study Metal Location in Shape-Selective Hydrocracking
… study by Brosius et al., 2016, the use of a Pt/MFI bifunctional hydrocracking catalyst in the presence of H2O has shown, for the first time, selective hydrocracking to produce not only a high yield but also high cetane number diesel product. The current study is a continuation of the work by …
-
Thymol synthesis via alkylation of m-cresol with isopropanol the effect of the SiO2/AI2O3 ratio of H-MFI catalysts on catalyst activity and thymol selectivity
… ration, i.e. the aluminium content of H-MFI (H-ZSM-5) zeolites. The results are interpreted based on a deep analysis of the reaction network.
-
Hydrocracking of long chain n-Paraffins under Fischer-Tropsch conditions
A number of various iron-palladium loaded H-MFI zeolites used for the hydrocracking of n- hexadecane under Fischer-Tropsch conditions were tested to address the inherent low CO tolerance of the pure palladium noble metal hydrocracking catalysts. The hydrocracking mechanism consists of two …
-
Production of mid-chain branched detergent-range olefins over shape-selective acid catalysts
… branched olefins, a range of acid catalysts (MFI, BEA, TON and amorphous silica-alumina) were screened for the dimerization of 1-hexene, under generally mild conditions, viz. 150 - 170°C, 20 - 40 bar and 1 - 4h-1 WHSV. It was postulated that shape-selective catalysts with defined pore sizes …
-
Characteristics of Donor-Specific anti-HLA Antibodies (DSA) Impacting different Renal Allograft Outcomes
… with de novo DSA were analyzed for the DSA MFI values, C1q positivity and IgG subclasses. IgG1 was the predominant IgG subclass (49.4%), followed by IgG3 (24.7%), IgG2 (16%), and IgG4 (9.9%). Among DSA characteristics, DSA MFI and IgG1 subclass were strongly correlated with C1q positivity …
-
Investigating transport through sub-nanometer zeolites pores
… salt rejection. In this thesis, we synthesized MFI (Mobil Five) zeolites that have uniform, well-defined pores of ~~ 5.5 Å and experimentally investigated the transport across these sub-nanometer pores. This porous structure serves as a model framework to experimentally investigate water and …
-
Examining the Determinants of Financial and Operational Sustainability of Microfinance Institutions in Ghana
… the sustainability of microfinance institutions (MFIs) in Ghana, with particular emphasis on microcredit pricing as a moderating factor in the hypothesized relationships, drawing on a sample of 270 MFIs. The first determinant involves financial factors, encompassing some key elements of capital …
-
Corporate Governance and Performance of Microfinance Institutions (MFIs): A Comparative Study in Sri Lanka and India
… and outreach of microfinance institutions (MFIs) in Sri Lanka and India. Guidance and principles developed from prior research which has predominantly focussed on corporate governance relating to corporations in mature financial markets may not be efficacious. There is a need for a more …
-
Essays in microfinance: their capital structure and financial inclusion.
… determinants of the funding structure of MFIs. Secondly, we examine the impact of funding/capital structure on MFI financial and social performance. Finally, within the context of unfavourable financial exclusion level in SSA, we question just how much important MFIs are in improving the …
-
Federal mandates and mortgage supply : regression discontinuity analyses of the community reinvestment and GSE Acts.
… census tracts with a median family income (MFI) under 80% of MSA MFI. The regression discontinuity (RD) estimates suggest an overall credit supply shift of at least $6 billion ($2007) from 1994 and 2002 in targeted neighborhoods. In addition to CRA's direct effect on bank lending, I also …
-
A comparative evaluation of manufacturing technologies and their effect on morphology and mechanical properties of poly-(propylene-ethylene) copolymers
… content ranges, there is a melt flow index (MFI) range, which increases from low to high. The differences in the MFI added further complications, especially when trying to determine optimum mechanical properties of the copolymer grades. The impact test results show that the toughness is at a …
-
Rational design and synthesis of zeolite acid catalysts for applications in biomass conversion
… and mesoporosity and strong external acid sites. MFI nanosheets have higher stability and selectivity to larger olefins and aromatics in the conversion of propanal to hydrocarbons due to shorter diffusion path lengths compared to bulk MFI zeolite. MWW nanosheets have a three-fold increase in …
-
OmpD but not OmpC is involved in adherence of Salmonella enterica serovar Typhimurium to human cells
… cytometry to obtain mean fluorescence intensity (MFI). The MFI values of cells with adherent wild-type and mutant bacteria were compared to determine adherence levels. MFI values were used to estimate the number of bacteria bound per host cell. Dual-color fluorescence gave a more precise analysis …
Page 1 of 5