Catalytic propane dehydrogenation is an attractive method to produce propylene while avoiding the issues of its traditional synthesis via naphtha steam cracking of naphtha. In this contribution, a series of Pt …
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It was found that suitable addition of Zn (0.7 wt%), Ce (0.5 wt%) and Co (0.3 wt%) to the Pt–Sn–K/γ-Al2O3 catalyst can improve the catalytic performance more than …
The formation enthalpies of Au–Sn and Pt–Sn binary subsystems were predicted by first principles calculations and these values were further refined by CALPHAD method. The results obtained accurately reproduced the experimental data. The reassessed phase diagram of the Au–Pt–Sn ternary system accurately described the phase …
The reassessment of Au–Pt–Sn system was done using the experimental data reported in literature [ ]. The calculated TD parameters of Au–Pt–Sn alloys are listed in table. Optimized TD data of Au–Pt–Sn system. The first step of ternary system optimization was to calculate the isothermal sections of Au–Pt–Sn system at 400 °C and ...
Diniz, A. S. A. C. (2011). The effects of various annealing regimes on the microstructure and physical properties of ITO (In2O3:Sn) thin films deposited by electron beam evaporation for solar energy …
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Nevertheless, the general correlation of the Pt:Sn count ratio and the Pt overlayer thickness can be used to estimate the thickness of the Pt deposits on Sn, which have a comparably small Pt:Sn ratio of 0.055, 0.105 and 0.114 for 1, 3 and 10 min of electrodeposition, shown in the inset of Fig. 6 (turquoise, magenta and purple stars). The ...
Pt-4.4 Sn/A1203 catalyst having a large loading of metal for their XPS experiments. The Pt-Sn catalyst was prepared by impreg- nating the support with a Pt-Sn complex in acetone. The samples were reduced in situ in the XPS reactor at a temperature of 648 K and a pressure of 2.5 bar. The researchers
Compared with dehydrogenation in conventional petroleum refinery processes, relatively pure hydrogen can be produced by propane dehydrogenation (PDH) without innate contaminants like sulfur and metals. Among the existing catalysts for PDH, Pt catalysts are popular and are often used in conjunction with Sn as a co-catalyst. Coke formation is a …
Introduction Pt–Sn bimetallic catalysts are highly performant in a variety of catalytic reactions, including (de)hydrogenation and oxidation of hydrocarbons. 1 In industry, for example, they are used worldwide in the Oleflex (UOP) process for the on-purpose production of propylene. 2 Besides their wide applicability, Pt–Sn catalysts have become …
During the bonding processes, both Cu and Pt dissolves into liquid tin and formed IMCs to the Cu/Sn and Pt/Sn interfaces. As can be seen from Figs. 2a, b and 3a, b, at the copper side of the bond, both Cu 6 Sn 5 and Cu 3 Sn phases were observed after soldering, and layer thicknesses were proportional to the soldering time (see Table …
By varying the RTT temperature from 500 to 600 °C while keeping the RTT time for only 1 min, we could obtain a series of Pt 1 /Fe 2 O 3-T (T denotes the RTT temperature) SACs.Figure 2 and ...
Fig. 3 (A) compares a series of cyclic voltammograms (CVs) of the different Pt/C and Pt–Sn/C catalysts, in nitrogen saturated 0.5 M H 2 SO 4.In order to prevent carbon oxidation to CO 2, the upper potential limit in the Pt/C catalyst was set to 0.95 V [30], [31].Whereas, the upper potential limit was set to 0.5 V in the bimetallic catalysts to avoid …
In this work, Pt-SnO 2 heteroaggregate nanocatalysts were synthesized by in situ transformation of Pt@Sn core–shell nanoparticles and their catalytic performance for hydrogenation of various substituted nitroaromatics was investigated. The Pt@Sn nanoparticles were prepared by a one-step method, and the alumina-supported Pt@Sn …
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1 Supporting information for Networked Pt-Sn Nanowires as Efficient Catalysts toward Alcohol Electrooxidation Pingping Song,+a Xiaoneng Cui,+a QiwaterShao,a Yonggang Feng,a Xing Zhub and Xiaoqing Huanga* aCollege of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China bTesting & Analysis …
When the Sn/Pt ratio is 1.5, it shows the best catalytic activity. The metal particle size of the catalyst has a great influence on the dehydrogenation process of methylcyclopentane …
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Highly stable and active Pt–Sn sub-nanometre clusters are located in sinusoidal zeolite channels, leading to improved and more stable propane dehydrogenation catalysts.
The Pt-Sn interaction was tested by temperature- programmed reduction and the catalytic activity was measured by cyclohexane dehydrogenation. The catalysts were coked by …
Then, the photoresist was stripped in heated MICROPOSIT Remover 1165, and substrates were cleaned in Acetone and Isopropanol baths followed by DI water rinse and nitrogen dry. Zoom In Zoom Out Reset image size Figure 3. An overview of base (above) and lid (below) wafers fabrication process flow. ... Thermodynamic reassessment …
Mn 3 Sn is a hexagonal antiferromagnet (AFM) with a stacked kagome lattice. ... Mater. 15, 1161–1165 (2016). Article CAS Google Scholar Tomiyoshi, S. Polarized neutron diffraction study of the ...
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2.1 Catalyst Preparation. SiO 2 supported Pt–Sn bimetallic catalysts were prepared via impregnation method with different synthesis procedures, as shown in Scheme 1.Prior to impregnation, the silica (JRC-SIO-9) was thermally treated in air at 773 K for 3 h. The pretreated SiO 2 support was then added into an aqueous solution of H 2 PtCl 6 6H …
ITO is considered as a support for Pt, catalysing ... Appl. Electrochem. 45, 1165–1173, doi:10. ... W. E. Stability limitations for Pt/Sn–In2O3 and Pt/In–SnO2 in acidic electrochemical ...
The enhanced catalytic activity is attributed to the Pt 4 Sn and PtZn formed phases in addition to highly dispersed mesoporous Pt particles. Based on the obtained results, the catalysts prepared by using simultaneous wet impregnation had shown higher catalytic activity and catalyst stability as to that of sequential wet impregnation. Journals ...
