نتایج جستجو برای: wet impregnation

تعداد نتایج: 38345  

Journal: :International journal of advanced chemistry 2021

In this study, magnetic sand and Crotalaria pallida gotten from Adamawa Bauchi states of Nigeria, respectively, were mixed after treatment, impregnated with kaolin using a wet impregnation method the resulting material was characterized scanning electron microcopy (SEM), X-ray fluorescence (XRF) diffraction (XRD). The result XRF analysis revealed existence number dopant-like constituents in sam...

Journal: :Chemcatchem 2022

This work shows the effect of selected ionic liquids on catalytic performance a Cu/Al2O3 catalyst towards citral hydrogenation. The was prepared using combination wet impregnation and strong electrostatic interaction technique. coated with three liquids, namely: [C4C1Pyrr][OTf], [C2C1C1Im][NTf2], [C2C1Im][NTf2] resulting in Cu-based SCILL catalysts (solid an liquid layer). fresh used were chara...

Journal: :Forests 2023

To promote the performance of fast-growing poplar wood for furniture applications, this study proposes and investigates feasibility modifying with a urea-formaldehyde resin impregnating agent by adding nano-SiO2 as way to improve its physical mechanical properties. By observing solubility addition in resin, determine optimal ratio solid content solution. After specimens were treated nano-SiO2/U...

Journal: :Bitlis Eren üniversitesi fen bilimleri dergisi 2022

In the present study, hydrogen production of wood sawdust pyrolysis catalysed by TiO2 impregnated Al2O3 (TiO2/Al2O3) was investigated under temperatures 600, 700 and 800 ℃. The catalyst preparation made wet impregnation method for enhanced hydrogen-rich gas from catalytic sawdust. Characterization morphology doped nanoparticles were performed using X-ray diffraction (XRD), Scanning Electron Mic...

2016
C. R. Francis

A few years ago, when officiating as civil surgeon in ODe of the stations of the North-West-Provinces, I was asked to prescribe for a lady whose prevailing and prominent symptom was sickness. It was unceasing. Exaggerated in the morning it continued throughout the day. At night only, when my patient slept, was relief experienced. She had been married a few months. I pronounced her to be pregnan...

Journal: :Chemical communications 2008
Jingwei Li Yunjie Ding Xianming Li Guiping Jiao Tao Wang Weimiao Chen Hongyuan Luo

Egg-shell, egg-yolk and egg-white types of Co/SiO2 catalysts were prepared by utilizing entrapped air to inhibit the entrance of impregnation or leaching solution into the cores of catalyst pellets during the preparation procedure; the entrapped air played the important role because the capillary pressure was reduced to a suitable range by adjusting the concentration of ethanol in the impregnat...

2008
Qiang Fu Gisela Weinberg Dang-Sheng Su

A straightforward method is presented to produce catalyst particle-filled carbon nanotubes. Based on capillarity and surface tension, a simple strategy was developed to selectively fill carbon nanotubes with Fe, Co, and Ni species using a two-step method consisting of impregnation and selective washing. By chosing the impregnation and washing solution properly, metal particles are produced excl...

2016
Tatjana Takševa

In her article "Genocidal Rape, Enforced Impregnation, and the Discourse of Serbian National Identity" Tatjana Takševa analyzes two main processes which contributed to the systematic rape and enforced impregnation of Bosniak women during the Balkan conflict: the discourse of Serbian nationalism articulated in response to the sexual violence that took place in Kosovo preceding the war and the si...

2008
Laurent Arurault Barbara Daffos François X. Sauvage

Nanocrystallized ceria-based coatings were prepared on TA6V titanium alloy by using a three-step procedure: substrate pretreatment, electrochemical impregnation and final heat treatment. UV–vis and Raman in situ spectroscopies performed at the substrate interface during the electrochemical impregnation, showed experimentally for the first time that the interfacial deposit is made up of cerium h...

2011
Mi Hyun Kim Young Chul Lee Sang Yoon Choi Chang-Won Cho Jeonghae Rho Kwang-Won Lee

In order to enhance bioactive functionalities of ginseng, an acid impregnation processing was applied as a pre-treatment in producing red ginseng. Acid impregnation studies were conducted, and acids (ascorbic, malic, and citric acid) were selected. The optimal concentration of each acid was investigated in this study in terms of ginsenoside contents. The most concerned ginsenoside, Rg3 was incr...

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