A5088504570- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Polyoxometalates: Synthesis and Applications
- Catalysis and Hydrodesulfurization Studies
- Oxidative Organic Chemistry Reactions
- Zeolite Catalysis and Synthesis
- Glycogen Storage Diseases and Myoclonus
- Inflammasome and immune disorders
- Transition Metal Oxide Nanomaterials
- Chemical Synthesis and Characterization
- Metal-Organic Frameworks: Synthesis and Applications
- Retinopathy of Prematurity Studies
- Lysosomal Storage Disorders Research
- Carbon dioxide utilization in catalysis
- Child and Adolescent Psychosocial and Emotional Development
- Studies on Chitinases and Chitosanases
- Mesoporous Materials and Catalysis
- Infant Health and Development
- Kawasaki Disease and Coronary Complications
- Child and Adolescent Health
Hokkaido University
2021-2024
Kanagawa University
2020-2021
Fukuoka Tokushukai Hospital
1986
Keggin-type phosphomolybdic acid (PMo12O40), treated with pyridine (Py), forms a crystalline material (PyPMo-HT) following heat treatment under an inert gas flow at ∼420 °C. Although this is known to have attractive catalytic properties for gas-phase oxidation, the origin of activity requires clarification. In study, we investigated crystal structure PyPMo-HT. PyPMo-HT comprises one-dimensional array Keggin units and pyridinium cations (HPy), HPy/Keggin unit ratio ∼1.0. Two oxygen atoms were...
Cardiovascular manifestations of Fabry's disease were studied clinically in 10 hemizygous males and 13 heterozygous females. Mitral valve prolapse was found 5 9 hemizygotes heterozygotes examined by echocardiography. Ordinary medical examinations revealed cardiomyopathy some asymptomatic females, the diagnosis Fabry heterozygote established demonstration specific inclusion bodies biopsied myocardium low a‐galactosidase activity leukocytes. Renovascular hypertension juvenile onset...
Crystalline trigonal Mo3VOx (Tri-MoVO) catalyst is constructed of {Mo6O21}6– pentagonal units and octahedral {MO6} that form hexagonal heptagonal channels in the crystal structure. Tri-MoVO an extremely active for selective oxidation acrolein (ACR) to acrylic acid (AA), with local structure around channel responsible catalysis. Here, promoter elements are widely used industrial Mo–V-based mixed oxide catalysts (W Cu) were introduced without altering Tri-MoVO. W was located at unit sites by...
Sulfated zirconia (ZrS) has been widely used as an acid catalyst in industrial processes for the isomerization of n-alkanes. Despite excellent catalytic properties this material, its catalytically active structure hardly identified to date. In study, we investigated crystal and crystalline Zr3SO9, which was reported 30 years ago by Kato et al. Zr3SO9 a hexagonal-shaped plate consisting (101) plane tetragonal ZrO2 phase with S species uniformly dispersed form SO42–. exhibits outstanding...
Oxidative dehydrogenation of ethane (ODHE) is an essential reaction in modern society to produce ethylene. The orthorhombic Mo3VOx catalyst (MoVO) was reported as one the best catalysts for this after a particular redox treatment generate lattice oxygen defects. This study elucidates location and nature defect sites well how molecular activated toward ODHE. insights into active site formation guidelines its design were gained through structural characterization, quantification defects,...
Abstract High‐dimensionally structured (HDS) mixed oxides of vanadium with metals (M) (e. g., Nb, Mo, and W; denoted as HDS‐MVO) were constructed by {M 6 O 21 } 12− pentagonal units {MO (M=Nb, W, or V) octahedra linkers. The materials synthesized using a hydrothermal method rod‐shaped solids. random assembly the in cross‐sectional plane rods facilitated formation micropore channels along long axis rods. Micropore was directly observed cross‐section HAADF‐STEM. These structural features are...
The orthorhombic Mo3VOx (MoVO) crystal catalyst has a structure analogous to that of the industrial for propane ammoxidation. However, it been observed MoVO exhibits poor selectivity formation acrylonitrile (AN). Here, we found higher AN yield was attainable over heat-treated at temperatures (600 °C) in pure nitrogen stream. Structural analyses revealed high-temperature heat treatment caused local structural changes through migration and segregation VO2+ without altering basic MoVO. This...
Microporous vanadotungstate (W4V3O19, VT-1) was constructed via the connection of [W4O16]8– cubane units with VO2+ linkers to form an LTA-zeolite-type crystal structure. We found that sites connecting VT-1 could be partially removed by appropriate acid treatment without destroying its This process involved a redox reaction between and linkers, V as V5+ during treatment. TiO2+ or ZrO2+ introduced into vacancies. The introduction Ti Zr substantially improved thermal stability under oxidizing...
High-dimensionally structured Mo–Fe oxide (HDS-MoFeO) was synthesized through an assembly of structural units supplied from Keplerate-type polyoxometalate, {Mo72Fe30}, under appropriate hydrothermal condition. HDS-MoFeO showed excellent catalytic activity for the selective oxidation methanol with slightly lower selectivity formaldehyde than that a conventional catalyst.
Pharmacosiderite Mo4P3O16 (Pharma-MoPO) consists of [Mo4O4] cubane unit and [PO4] tetrahedral to form an open framework with a microporous structure similar that LTA-type zeolite. Although attractive applications are expected due its redox-active components, physicochemical properties have been poorly investigated the specificity synthesis, which requires high hydrothermal synthesis temperature 360 °C. In this study, we succeeded in synthesizing Pharma-MoPO by at 230 °C, can be applied using...
Crystalline orthorhombic Mo 3 VO x (MoVO) is a promising catalyst for the selective oxidation of acrolein and methacrolein. These oxidations occur on heptagonal channel, while catalysis field was different. This difference resulted in significant catalytic activity.
水熱合成により,5員環ユニット({Mo6O21}6−)と酸素八面体の配列により形成される高次構造Mo–Cr複合酸化物(HDS-MoCrO)の合成に成功した。水熱合成時間を変化させて得られた固体と液体を分析することで,水熱合成初期にはアンダーソン型ヘテロポリ酸((NH4)3H6CrMo6O24 · 7H2O)が生成し,経時によってケプラレート型ヘテロポリ酸(Mo72Cr30O252)が,さらにはHDS-MoCrOが形成されることが分かった。ケプラレート型ヘテロポリ酸およびHDS-MoCrOとも{Mo6O21}6−で構成されていることから,水熱条件下,ケプラレート型ヘテロポリ酸が分解して{Mo6O21}6−を供給することで,HDS-MoCrOが形成されると考察した。構成元素の異なる3種の高次構造複合酸化物であるHDS-MoO,HDS-MoFeO,HDS-MoCrOを用いてエタノール選択酸化反応を行ったところ,これらはいずれも同様の触媒活性を示したが生成物の選択性は異なった。HDS-MoCrOは広い温度域で高いアセトアルデヒド収率(91 %)を示し,その収率は少なくとも60 hは安定していた。
Molybdenum oxides are widely used in various fields due to their electronic and structural characteristics. These materials can generate lattice oxygen defects by reduction treatments, which sometimes play central roles applications. However, little has been understood about properties since it is difficult increase the amount of crystal structure changes most cases. Here, we report a new class high-dimensionally structured Mo oxide (HDS-MoOx) constructed random assembly {Mo6O21}6–...
Since the increase in oxygen intermediate generation by neutrophils and its oxidative damages patients with Kawasaki disease were verified, superoxide dismutase (SOD) which quenches intermediates has been considered to be one of beneficial therapy for disease. Liposomal encapsulated SOD (L-SOD) A.M. Michelson developed was reported effective various inflammatory disorders including those whose pathogenesis an close correlation. We applied liposomal injection treatment six patients. The drug...
Recently pediatricians take a more comprehensive approach to children with psychosomatic diseases by treating the child and family as well.The effectiveness of therapy in well known today. The case reported here application techniques mother 13-year old boy who had suffered from bronchial asthma attacks since he was 3 years old. Because his recurrent severe attacks, became very nervous anxious about sick boy.When an amelioration symptoms observed, doctor decided reduce dosage medicine...