Catalytic oxidation of acetone over CuCeOx nanofibers prepared by an electrospinning method

RSC Advances ◽  
2014 ◽  
Vol 4 (83) ◽  
pp. 43874-43881 ◽  
Author(s):  
Rui Qin ◽  
Jinghuan Chen ◽  
Xiang Gao ◽  
Xinbo Zhu ◽  
Xinning Yu ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Excellent Performance ◽  
Electrospinning Method

A series of CuCeOx nanofiber catalysts with excellent performance toward acetone oxidation were prepared by an electrospinning method.

High-performance humidity sensors based on electrospinning ZnFe2O4 nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (84) ◽  
pp. 68299-68304 ◽  
Author(s):  
Ming Zhuo ◽  
Ting Yang ◽  
Tao Fu ◽  
Qiuhong Li
Keyword(s):  
High Performance ◽  
Humidity Sensor ◽  
Hollow Structure ◽  
Electrical Measurements ◽  
Excellent Performance ◽  
Humidity Sensors ◽  
Humidity Sensing ◽  
Electrospinning Method

In this paper, ZnFe2O4 nanotubes with hollow structure were synthesized by a simple electrospinning method. Humidity sensor was fabricated based on these nanotubes. The electrical measurements show excellent performance in humidity sensing.

scholarly journals Efficient Ce–Co composite oxide decorated Au nanoparticles for catalytic oxidation of CO in the simulated atmosphere of a CO2 laser

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 22921-22928
Author(s):  
Qiang Fang ◽  
Hailian Li ◽  
Qingquan Lin ◽  
Kuo Liu ◽  
Yang Su ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Catalytic Oxidation ◽  
Co2 Laser ◽  
Au Nanoparticles ◽  
Lattice Oxygen ◽  
Oxidation Of Co ◽  
Excellent Performance ◽  
Composite Oxide ◽  
Catalytic Oxidation Of Co

Novel Au/Ce-Co-Ox/Al2O3 showed a very excellent performance for CO oxidation in the simulated atmosphere of CO2-laser mainly due to SMSI and labile lattice oxygen.

scholarly journals Solvent-Free Catalytic Oxidation of Benzyl Alcohol over Au-Pd Bimetal Deposited on TiO2: Comparison of Rutile, Brookite, and Anatase

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Xiaoliang Li ◽  
Jiangjiang Feng ◽  
Jia Sun ◽  
Zhe Wang ◽  
Wei Zhao
Keyword(s):  
Benzyl Alcohol ◽  
Catalytic Oxidation ◽  
Pd Nanoparticles ◽  
Solvent Free ◽  
Experimental Results ◽  
Precipitation Method ◽  
Excellent Performance ◽  
Pd Catalysts ◽  
Research Attention ◽  
Pd Nanoparticle

AbstractTiO2 (P25)-supported Au-Pd bimetal nanoparticles displayed excellent performance in the solvent-free benzyl alcohol catalytic oxidation. However, little research attention has been paid to investigate the effects of TiO2 form on the catalytic activity of Au-Pd/TiO2. In the present research, rutile, brookite, and anatase TiO2 were successfully synthesized and subsequently applied as the carrier to load Au-Pd nanoparticles by the deposition-precipitation method. The experimental results indicated that the benzyl alcohol conversion employing the rutile TiO2-supported Au-Pd catalyst is higher than the conversion of anatase and brookite TiO2-loaded Au-Pd catalysts. However, the Au-Pd/TiO2-rutile displayed the lowest and highest selectivity toward benzaldehyde and toluene, respectively. ICP-AES, XRD, XPS, and TEM were conducted to characterize these catalysts. The corresponding experimental results revealed that the excellent performance of Au-Pd/TiO2-rutile catalyst was attributed to both the smaller Au-Pd nanoparticle size distribution and the higher concentrations of Oα and Pd2+ species on the catalyst surface. In the recycle experiments, the Au-Pd/TiO2-rutile catalyst displayed lower reaction stability compared with the Au-Pd/TiO2-anatase and Au-Pd/TiO2-brookite, which might be due to the coverage of larger amount of aldehyde products on the surface.

Computer programs for the calculation of x-ray intensities emitted by elements in multi-layer structures

1990 ◽  
Vol 48 (2) ◽  
pp. 216-217
Author(s):  
G.F. Bastin ◽  
H.J.M. Heijligers ◽  
J.M. Dijkstra
Keyword(s):  
Software Package ◽  
Light Element ◽  
Matrix Correction ◽  
Excellent Performance ◽  
Element Analysis ◽  
X Ray ◽  
Know How ◽  
Accurate Knowledge ◽  
Layer Structures ◽  
Bulk Matrix

For the calculation of X-ray intensities emitted by elements present in multi-layer systems it is vital to have an accurate knowledge of the x-ray ionization vs. mass-depth (ϕ(ρz)) curves as a function of accelerating voltage and atomic number of films and substrate. Once this knowledge is available the way is open to the analysis of thin films in which both the thicknesses as well as the compositions can usually be determined simultaneously.Our bulk matrix correction “PROZA” with its proven excellent performance for a wide variety of applications (e.g., ultra-light element analysis, extremes in accelerating voltage) has been used as the basis for the development of the software package discussed here. The PROZA program is based on our own modifications of the surface-centred Gaussian ϕ(ρz) model, originally introduced by Packwood and Brown. For its extension towards thin film applications it is required to know how the 4 Gaussian parameters α, β, γ and ϕ(o) for each element in each of the films are affected by the film thickness and the presence of other layers and the substrate.

Macrocellular Titanosilicate Monoliths as Highly Efficient Structured Olefin Epoxidation Catalysts

2019 ◽  
Author(s):  
Valentin Smeets ◽  
Ludivine van den Biggelaar ◽  
Tarek Barakat ◽  
Eric M. Gaigneaux ◽  
Damien Debecker
Keyword(s):  
Sol Gel ◽  
Silica Matrix ◽  
Flow Mode ◽  
Tetrahedral Coordination ◽  
Excellent Performance ◽  
One Pot ◽  
Templating Method ◽  
Porous Texture ◽  
Internal Phase ◽  
Epoxidation Of Cyclohexene

Self-standing macrocellular titanosilicate monolith foams are obtained using a one-pot sol-gel route and show excellent performance in the epoxidation of cyclohexene. Thanks to the High Internal Phase Emulsion (HIPE) templating method, the materials feature a high void fraction, a hierarchically porous texture and good mechanical strength. Highly dispersed Ti species can be incorporated in tetrahedral coordination the silica matrix. These characteristics allow the obtained ‘SiTi(HIPE)’ materials to reach high catalytic turnover in the epoxidation of cyclohexene. The monoliths can advantageously be used to run the reaction in continuous flow mode.<br>

LDX 2101

Alloy Digest ◽  
2015 ◽  
Vol 64 (8) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Duplex Stainless Steel ◽  
Tensile Properties ◽  
Lower Cost ◽  
Heat Treating ◽  
General Purpose ◽  
Research Centre ◽  
Excellent Performance

Abstract LDX 2101 is a low-alloyed duplex stainless designed as a general-purpose duplex stainless steel. Designed for excellent performance at lower cost. This datasheet provides information on composition, physical properties, microstructure, hardness, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1220. Producer or source: Outokumpu Stainless AB, Avesta Research Centre.

FORMALOY

Alloy Digest ◽  
1975 ◽  
Vol 24 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Compressive Strength ◽  
Corrosion Resistance ◽  
Sheet Metal ◽  
High Purity ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Grain Structure ◽  
Excellent Performance

Abstract FORMALOY is a high-strength, high-purity zinc-base alloy with excellent performance in dies for forming sheet metal. It has a fine, dense grain structure which contributes markedly to its good toughness, excellent machinability and ability to develop a high polish. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Zn-17. Producer or source: Federated Metals Corporation, ASARCO Inc..

Synthesizing Conjunctive & Disjunctive Linear Invariants by K-means++ and SVM

2020 ◽  
Vol 17 (6) ◽  
pp. 847-856
Author(s):  
Shengbing Ren ◽  
Xiang Zhang
Keyword(s):  
Software Verification ◽  
State Of The Art ◽  
Positive Sample ◽  
Machine Learning Algorithms ◽  
Support Vector ◽  
Hoare Logic ◽  
Excellent Performance ◽  
Automated Software ◽  
Inductive Invariants ◽  
Linear Invariants

The problem of synthesizing adequate inductive invariants lies at the heart of automated software verification. The state-of-the-art machine learning algorithms for synthesizing invariants have gradually shown its excellent performance. However, synthesizing disjunctive invariants is a difficult task. In this paper, we propose a method k++ Support Vector Machine (SVM) integrating k-means++ and SVM to synthesize conjunctive and disjunctive invariants. At first, given a program, we start with executing the program to collect program states. Next, k++SVM adopts k-means++ to cluster the positive samples and then applies SVM to distinguish each positive sample cluster from all negative samples to synthesize the candidate invariants. Finally, a set of theories founded on Hoare logic are adopted to check whether the candidate invariants are true invariants. If the candidate invariants fail the check, we should sample more states and repeat our algorithm. The experimental results show that k++SVM is compatible with the algorithms for Intersection Of Half-space (IOH) and more efficient than the tool of Interproc. Furthermore, it is shown that our method can synthesize conjunctive and disjunctive invariants automatically

Sign in / Sign up

Export Citation Format

Share Document