scholarly journals Sensitivity Enhancements in Lithium Titanates by Incipient Wetness Impregnation DNP NMR

2020 ◽  
Vol 124 (30) ◽  
pp. 16524-16528 ◽  
Author(s):  
Snædís Björgvinsdóttir ◽  
Pinelopi Moutzouri ◽  
Pierrick Berruyer ◽  
Michael A. Hope ◽  
Lyndon Emsley
Keyword(s):  
Incipient Wetness Impregnation ◽  
Incipient Wetness

Cobalt oxide functionalized nanoporous carbon electrodes and their excellent supercapacitive performance

RSC Advances ◽  
2015 ◽  
Vol 5 (18) ◽  
pp. 13930-13940 ◽  
Author(s):  
Dattatray S. Dhawale ◽  
Gurudas P. Mane ◽  
Stalin Joseph ◽  
Siddulu N. Talapaneni ◽  
Chokkalingam Anand ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Nanoporous Carbon ◽  
Carbon Electrodes ◽  
Incipient Wetness Impregnation ◽  
Supercapacitive Performance ◽  
Supercapacitor Application ◽  
Impregnation Technique ◽  
Incipient Wetness ◽  
Coo Nanoparticles

Nanoporous carbon (CMK-3-150) functionalized with different amounts of cobalt oxide (CoO) nanoparticles was synthesized by an incipient wetness impregnation technique for supercapacitor application.

scholarly journals Hydrocracking of Coconut Oil over Ni-Fe/HZSM-5 Catalyst to Produce Hydrocarbon Biofuel

2019 ◽  
Vol 19 (2) ◽  
pp. 319 ◽  
Author(s):  
Muhammad Al-Muttaqii ◽  
Firman Kurniawansyah ◽  
Danawati Hari Prajitno ◽  
Achmad Roesyadi
Keyword(s):  
Surface Area ◽  
Chain Length ◽  
Crystalline Structure ◽  
Reaction Temperature ◽  
Batch Reactor ◽  
Coconut Oil ◽  
Incipient Wetness Impregnation ◽  
Incipient Wetness

This present study was aimed to investigate the hydrocracking of coconut oil using Ni-Fe/HZSM-5 catalyst in a batch reactor at three reaction temperatures (350, 375, and 400 °C). The Ni-Fe/HZSM-5 catalyst was prepared by using incipient wetness impregnation. The Ni-Fe/HZSM-5 catalyst was characterized using XRD, BET, and SEM-EDX. From XRD results, the loading of Ni and Fe did not change the crystalline structure of HZSM-5 catalyst. The surface area of HZSM-5 was 425 m2/g and decreased after the addition of metals (Ni and Fe) into HZSM-5 support. These changes implied that Ni and Fe particles were successfully dispersed on the HZSM-5 surface and incorporated into HZSM-5 pore. The product of hydrocarbon biofuel was analyzed using GC-MS. The GC-MS results of hydrocarbon biofuel showed the highest compounds for n-paraffin and yield for gasoil was 39.24 and 18.4% at a temperature of 400 °C, respectively. The reaction temperature affected the yield and the composition of hydrocarbon biofuel. At this reaction temperature condition, decarboxylation and decarbonylation were favored; lead to the formation of n-alkanes with an odd number of carbon atoms chain length.

Phosphorus Promoted HZSM-5 Zeolites for the Coupling Transformation of Methanol with 1-Butene to Propylene

2020 ◽  
Author(s):  
Xiao-hua Tang ◽  
Rui-qiang Liu ◽  
Hai-feng Tian ◽  
Hui Li ◽  
fei zha ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Space Velocity ◽  
In Situ Synthesis ◽  
Synthetic Methods ◽  
Incipient Wetness Impregnation ◽  
Large Specific Surface Area ◽  
Reaction Conditions ◽  
Coupling Transformation ◽  
Incipient Wetness

Phosphorus promoted HZSM-5 zeolites (P-HZSM-5) were prepared by synthetic methods of incipient wetness impregnation and in-situ synthesis, respectively. It was characterized by the means of XRD, SEM, BET, TG and NH3-TPD. The P-HZSM-5 zeolite prepared by incipient wetness impregnation has a large specific surface area and pore size, and the weak acidity is remarkably increased. The catalytic activity of P-HZSM-5 for the coupling transformation of methanol with 1-butene to propylene was investigated. Under the reaction conditions of temperature at 550 ℃, pressure at 0.4 MPa, space velocity at 1800 mL/(gcath) and mole ratio of CH3OH/C4H8 to 1:1, the conversion of C4H8 can reach to 75.8%, and the selectivity and yield of propylene are 42.2% and 31.9%, respectively.

Decoration of mesoporous carbon electrodes with tin oxide to boost their supercapacitive performance

2020 ◽  
Vol 44 (29) ◽  
pp. 12654-12663
Author(s):  
Hang T. T. Le ◽  
Duc Tung Ngo ◽  
Viet-Anh-Dung Dang ◽  
Thuy T. B. Hoang ◽  
Chan-Jin Park
Keyword(s):  
Tin Oxide ◽  
Mesoporous Carbon ◽  
Carbon Electrodes ◽  
Charge Storage ◽  
Incipient Wetness Impregnation ◽  
Supercapacitive Performance ◽  
Unique Material ◽  
Incipient Wetness

A unique material comprising mesoporous carbon decorated with tin oxide was synthesised by facile incipient wetness impregnation for enhanced charge storage.

scholarly journals Implication of Water Molecules at the Silica–Ibuprofen Interface in Silica-Based Drug Delivery Systems Obtained through Incipient Wetness Impregnation

2017 ◽  
Vol 121 (48) ◽  
pp. 26833-26839 ◽  
Author(s):  
Thierry Azaïs ◽  
Guillaume Laurent ◽  
Kuldeep Panesar ◽  
Andreï Nossov ◽  
Flavien Guenneau ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Water Molecules ◽  
Incipient Wetness Impregnation ◽  
Incipient Wetness

Effect of silver on the catalytic hydrodechlorination of tetrachloromethane over silica-supported palladium-silver catalysts

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Magdalena Bonarowska ◽  
Zbigniew Kaszkur ◽  
Zbigniew Karpiński
Keyword(s):  
Gas Phase ◽  
Palladium Catalysts ◽  
Catalytic Performance ◽  
Incipient Wetness Impregnation ◽  
Significant Extent ◽  
Silver Addition ◽  
Catalytic Hydrodechlorination ◽  
Silver Catalysts ◽  
Supported Palladium ◽  
Incipient Wetness

AbstractTwo silica-supported palladium based catalysts characterized by overall metal loadings 10 wt.%, and atomic Pd : Ag ratios of 100 : 0 and 70 : 30, were prepared by incipient wetness impregnation, subjected to reduction in hydrogen and characterized by XRD. It was found that incipient wetness co-impregnation of silica resulted in the formation of a catalyst characterized by relatively small metal crystallites (~11 nm) and significant extent of Pd-Ag alloying. The catalytic performance was investigated in the hydrodechlorination of tetrachloromethane in the gas phase. Silver addition to palladium in the co-impregnated catalysts had very pronounced effect, vastly decreasing the overall activity (conversion) and also the selectivity towards hydrocarbons, propensity characteristic for the monometallic palladium catalysts working in CCl4 hydrodechlorination carried out in the gas phase. Instead, large amounts of C2HxCly dimeric products were formed. These dimers are considered as possible coke precursors. Post-reaction samples of both catalysts contained large amount of carbon which entered the Pd and Pd-Ag phases. This carbon can be easily removed by treatment with hydrogen at 450ºC.

La-ZrO2 and Ru-ZrO2 Promoted Co/SiO2 Catalysts for Fischer-Tropsch Synthesis

2013 ◽  
Vol 634-638 ◽  
pp. 551-554
Author(s):  
Waritsara Bungmek ◽  
Passakorn Kongkinka ◽  
Siwaruk Chotiwan ◽  
Pinsuda Viravathana
Keyword(s):  
Catalytic Activity ◽  
Reaction Time ◽  
Cobalt Catalyst ◽  
Hydrocarbon Chain ◽  
Tropsch Synthesis ◽  
Incipient Wetness Impregnation ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Incipient Wetness ◽  
Co Precipitation

The performance of ZrO2-La promoted silica supported cobalt catalyst (100Co/15ZrO2/ 100Aerosil/0.66La) was compared to the ZrO2-Ru promoted one, 100Co/15ZrO2/100Aerosil/0.66Ru, in Fischer-Tropsch synthesis (FTS). These catalysts were prepared by co-precipitation and incipient wetness impregnation methods. The characterization by XRD confirmed the cobalt phase of Co3O4 in both catalysts. For their catalytic activity on FTS reaction, the results preliminarily showed the higher methane fraction (60-80%) and lower C2-C4(10-20%) and C5+(10-20%) fractions in ZrO2-La promoted catalyst compared to the fractions of methane (20-40%), C2-C4(20-50%), and C5+(10-60%) from the ZrO2-Ru promoted catalyst. During reaction, the maximum n-paraffin selectivity of 40% was at C3and the hydrocarbon chain was up to C6for the ZrO2-La promoted catalyst. For the ZrO2-Ru promoted catalyst, the result showed the maximum n-paraffin of C3at 30 min of reaction time. When the reaction time increased, the maximum n-paraffin selectivity shifted toward higher C number but levelled off (15%) and the hydrocarbon chain was up to C16.

Highly active and durable Pd/Fe2O3 catalysts for wet CO oxidation under ambient conditions

2016 ◽  
Vol 6 (11) ◽  
pp. 3918-3928 ◽  
Author(s):  
A. S. Ivanova ◽  
E. M. Slavinskaya ◽  
O. A. Stonkus ◽  
R. V. Gulyaev ◽  
T. S. Glazneva ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Support Surface ◽  
Incipient Wetness Impregnation ◽  
Ambient Conditions ◽  
Highly Active ◽  
Incipient Wetness

Pd/Fe2O3(FeOOH) catalysts were prepared in different ways: T – traditional incipient wetness impregnation (IWI) from a solution of Pd(NO3)2, D – modification of the support surface by dimethylformamide prior to IWI, and DF – variant D followed by treatment with a HCOONa.

The Activities of NO Oxidation over the Pt/γ-Al2O3 Catalyst

2013 ◽  
Vol 281 ◽  
pp. 385-388
Author(s):  
Zhi Peng Deng ◽  
Jian Li ◽  
Hong He ◽  
Lu Di Zhang
Keyword(s):  
Conversion Efficiency ◽  
Thermodynamic Equilibrium ◽  
Conversion Rate ◽  
Oxidation Reaction ◽  
No Oxidation ◽  
Incipient Wetness Impregnation ◽  
Pt Catalysts ◽  
No Conversion ◽  
Supported Pt Catalysts ◽  
Incipient Wetness

Pt catalysts were prepared by incipient wetness impregnation,It was investigated that the effects of the support and the loading of Pt on the activities of NO oxidation over supported Pt catalysts, The investigation indicates that Pt/γ-Al2O3 was better performance than Pt/ZrO2, Pt/CeO2, Pt/TiO2 and Pt/Ce0.4Zr0.6O2 on NO oxidation.The optimal Pt loading over Pt/r-Al2O3 was 1%, the NO conversion efficiency of 54.9% at 300°C, close to the conversion rate of thermodynamic equilibrium of the NO oxidation reaction.

Sign in / Sign up

Export Citation Format

Share Document