REACTION-DIFFUSION MODELLING: QUANTITATIVE STUDY OF GEOMETRY-ACTIVITY RELATIONSHIP OF FINNED ZEOLITE CATALYST & MODEL STUDY OF MAXWELL-STEFAN FORMUALATION WITH DIFFERENT ADSORPTION MECHANISMS

The improved catalytic performance of nano-sized zeolite with considerably reduced internal diffusion limitation has stimulated the research on the synthesis of new structure/geometry of catalyst for industry application. In 2020, Rimer’s group developed a new finned zeolite catalyst with significant reduced internal diffusion limitation by epitaxial growth of finned like protrusion.[4] The first chapter of this thesis focusses on the simulation of the effect of geometry of this finned zeolite on selectivity and diffusion limitation. A reaction-diffusion mathematical model is built to examine the geometry-selectivity relationship via simulation of two parallel liquid phase reactions (self-etherification and alkylation). Finned catalysts with four different geometries are chosen and compared with conventional sphere catalyst of similar size. The second chapter of this thesis is about the modelling of zeolite catalyzed reaction, adsorption, and diffusion inside the zeolite crystal via using Stefan-maxwell and Langmuir-Hinshelwood formulation. Two mostly common adsorption approach, multicomponent Langmuir isotherm (MCL) and Ideal adsorption solution theory (IAST) are applied in the model. By simulating gas n-Hexane isomerization reaction in MFI zeolite, the difference of reaction-diffusion models with IAST model and MCL model is shown. The simulation results are compared with results reference papers

Vibrating Flexoelectric Micro-Beams as Angular Rate Sensors

We studied flexoelectrically excited/detected bending vibrations in perpendicular directions of a micro-beam spinning about its axis. A set of one-dimensional equations was derived and used in a theoretical analysis. It is shown that the Coriolis effect associated with the spin produces an electrical output proportional to the angular rate of the spin when it is small. Thus, the beam can be used as a gyroscope for angular rate sensing. Compared to conventional piezoelectric beam gyroscopes, the flexoelectric beam proposed and analyzed has a simpler structure

Vibrating Flexoelectric Micro-Beams as Angular Rate Sensors

We studied flexoelectrically excited/detected bending vibrations in perpendicular directions of a micro-beam spinning about its axis. A set of one-dimensional equations was derived and used in a theoretical analysis. It is shown that the Coriolis effect associated with the spin produces an electrical output proportional to the angular rate of the spin when it is small. Thus, the beam can be used as a gyroscope for angular rate sensing. Compared to conventional piezoelectric beam gyroscopes, the flexoelectric beam proposed and analyzed has a simpler structure

Gamification of mobile wallet as an unconventional innovation for promoting Fintech:An fsQCA approach

Although digitalisation brings important possibilities to banking &amp; finance service, implementing digital technologies in practices can be challenging. Indeed, the adoption of new innovative technology in the banking &amp; finance sector lags behind other business sectors. Many of the valuable banking &amp; finance-related technologies have not been adopted in relation to the strategic implications of decisions in domains such as the development of service innovation and personalization, value co-creation, and marketing strategies. In particular, there is a paucity of research in using gamification to explore ways of customising banking &amp; finance fintech offerings, improving customers’ experience, and developing efficient banking &amp; finance marketing tactics. Drawing on the UTAUT2 and Otcalysis gamification framework, this study develops a research model investigating what configurations of motivations, expectations and conditions can shape consumers’ behavioral intention to adopt a gamified mobile wallet system. Findings suggest that combining effort expectancy, facilitating conditions and perceived value leads to higher intention to use gamified mobile wallet. Accordingly, firms need to consider the three core conditions when design relevant gamifications.</p