A5082079051- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Gas Sensing Nanomaterials and Sensors
- Zeolite Catalysis and Synthesis
- ZnO doping and properties
- Ga2O3 and related materials
- Catalysis and Hydrodesulfurization Studies
- Transition Metal Oxide Nanomaterials
- Semiconductor materials and devices
- Hydrogen Storage and Materials
- Fiber-reinforced polymer composites
- Metal and Thin Film Mechanics
- Semiconductor Lasers and Optical Devices
- Advanced Sensor and Energy Harvesting Materials
- Mechanical and Optical Resonators
- Advanced materials and composites
- Quantum Dots Synthesis And Properties
- Carbon Nanotubes in Composites
- Wound Healing and Treatments
- Diamond and Carbon-based Materials Research
- Catalysts for Methane Reforming
- Photonic and Optical Devices
- Anodic Oxide Films and Nanostructures
- Catalysis for Biomass Conversion
- X-ray Spectroscopy and Fluorescence Analysis
Hokkaido University
2019-2025
South China Agricultural University
2017
National Chung Hsing University
2008-2013
The study of the formation, characterization, and functionality isolated surface hydrides on solid materials is a formidable task because complexity surfaces difficulty analyzing structures in solids. Herein, we found formation indium (In) hydride species supported by CHA zeolites. In were formed treatment an In-exchanged zeolite (In-CHA) with H2 at high temperatures (>773 K). situ Fourier transform infrared (FTIR) spectroscopy density functional theory (DFT) calculations revealed that...
Plastic waste is a major environmental issue; converting it directly into valuable chemicals by using catalysts promising alternative to plastic recycling. Here, we report the selective catalytic cracking of polypropylene (PP), typical commodity plastic, high-value light olefins (C2–C5), below pyrolytic temperature (290 °C) and without external hydrogen supply, zeolite catalysts. Among H+-form zeolites with different structures, HMFI showed highest yields hydrocarbons which (C2–C5) were...
The photon-sensing abilities of nanowires have been investigated before and after surface fluorination by microwave plasma-enhanced chemical vapor deposition. electrical conductance were remarkably improved an effective doping fluorine into the nanowires. These results demonstrated that fluorinated potential applications as UV photodetectors with high properties.
Valorization of biomass-derived feedstock triglycerides (TGs) into the corresponding acids via hydrolysis is an attractive and robust research target. Herein we screened different heterogeneous homogeneous catalysts for trilaurin in water; among catalysts, pseudohexagonal (TT) phase Nb2O5 catalyst was most effective with highest yield lauric acid under mild reaction conditions. A series obtained by calcinating Nb2O5·nH2O at temperatures were characterized tested this to determine...
Abstract In this study, the sandwich‐structured composite (SSC) membranes with well‐antibacterial and antioxidant properties, which have promising application as wound dressing, are successfully fabricated by combining an electrospinning process. The SSC composed of three layers, including bottom polyvinylidene fluoride fibrous layer, middle curcumin/polylactic acid (PLA) microsphere top enrofloxacin/PLA respectively. obtained characterized in terms morphology, component, mechanical property...
A reaction of ethane (C2H6) with ammonia (NH3) over metal-loaded zeolites to yield acetonitrile (CH3CN) under the O2-free conditions was studied. Among various zeolites, Ga/HFER a Ga/Al ratio 1.0 afforded highest CH3CN yield. Ga-free HFER and Ga-loaded K-exchanged FER (Ga/KFER) were nearly inactive for ammodehydrogenation C2H6, indicating that both Ga Brønsted acid sites are indispensable. Extended X-ray absorption fine structure (EXAFS) results show Ga2O3 species in as-prepared catalyst...
A high-loading Ga-exchanged MFI zeolite was developed for efficient ethane dehydrogenation. Its high catalytic performance is ascribed to both the low amount of Brønsted acid sites and major formation [GaH 2 ] + ions among isolated Ga hydrides.
Abstract The reaction mechanisms of C3H8 dehydrogenation and subsequent metathesis on a TiH2 surface were investigated using an automated path search method. predicted pathway suggests that could occur at the H vacancies present surface. propylidene species formed by initial are crucial intermediates in butane formation; this compound is turn required metal hydrides.
Propane metathesis reactions over group 2–5 metal hydrides were investigated where TiH 2 exhibited the highest butane formation amount. This study is first example of carbon–carbon bond cleavage and bulk hydrides.
In recent years, the synthesis of one-dimensional nanomaterials has assumed considerable importance because potential applications these especially in nanodevices. this study, bundled tungsten oxide nanowires having diameters 25–60 nm and lengths several micrometers were fabricated on Si substrates within 1.5 min by microwave plasma-enhanced chemical vapor deposition (MPECVD). The crystal structure, morphology, composition characterized scanning electron microscopy, X-ray diffraction,...
Catalytic propane dehydrogenation (PDH) has mainly been studied using metal- and metal oxide-based catalysts. Studies on catalysis by hydrides, however, have rarely reported. In this study, PDH reactions group IIIB IVB hydride catalysts were investigated under relatively low-temperature conditions of 450 °C. Lanthanum exhibited the lowest activation energy for highest propylene yield. Based kinetics studies, a comparison between reported calculation results isotope experiments, hydrogen...
Ga-doped ZnO nanowire has a wurtzite hexagonal structure and been prepared in horizontal tube furnace by thermal chemical vapor deposition method. In this work, we fabricate the nanowires without metalized catalyst through evaporation of Zn powers Ga metals at low growth temperature 55°C.Temperature is critical experimental parameter for formation nanowires.This process can be attributed to dopant lattice position he nanowires. As shown scanning electron microscopy (SEM), different diameters...
In situ Ga K-edge XANES analysis of Ga-exchanged zeolite was performed under actual operating temperatures and different atmospheres. The main absorption peak intensity responsible for the presence or absence a hydride source in gas phase.