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Water gas shift activity of Co-Mo/MgO-Al_2O_3 catalysts presulfided with ammonium sulfide

Agricultural Sciences（农业科学） 2021年第10期

作者： diane Judicaëlle Kambou Hervé Nandkangre Adjima Ouoba Abdou Kader Congo N’golo Moussa Konate Wend-Pagnangdé Marie Serge Félicien Zida Nerbéwendé Sawadogo Mahamadou Sawadogo Mahama Ouedraogo(Université Joseph KI-ZERBO UFR-SvT Ecole doctorale Sciences et Technologies Laboratoire Biosciences Equipe génétique et Amélioration des Plantes Ouagadougou Burkina Faso Institut de l’Environnement et de Recherches Agricoles (INERA) département de productions végétales Laboratoire de génétique et de Biotechnologies végétales Ouagadougou Burkina Faso Centre Universitaire de Tenkodogo/Université Thomas SANKARA Ouagadougou Burkina Faso Centre Universitaire de Ziniaré Université Joseph KI-ZERBO Ouagadougou Burkina Faso Université Norbert ZONgO UFR ST (Sciences et Technologies) Koudougou Burkina Faso)

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Journal of Natural gas Chemistry 2010年第1期19卷 61-66页

作者： Yixin Lian, Huifang Wang, Weiping Fang, Yiquan Yang department of Chemistry, College of Chemistry and Chemical Engineering, National Engineering Laboratory for green Chemical productions of Alcohols, Ethers and Esters, Xiamen University, Xiamen 361005, Fujian, China department of Chemistry College of Chemistry and Chemical Engineering National Engineering Laboratory for Green Chemical Productions of Alcohols Ethers and Esters Xiamen University Xiamen 361005 Fujian China

Co-Mo/MgO-Al2O3 catalyst was presulfided with ammonium sulfide in aqueous solution and activated with synthesis gas for water gas shift reaction. The assay results indicate that the presulfided Co-Mo/MgO-Al2O3 catalyst exhibits an excellent catalytic activity and stability. XRd and EPR characterization results show that the O-S exchange might occur during the impregnation, leading to the formation of （NH4）2MoS4 （or （NH4）zMoxSy） precursor, which was then thermally decomposed and reduced to MoS2. The higher catalytic performance is attributed to an optimization formation of active Co-Mo sulfides, consisting of well dispersed MoS2 and Co-Mo-S phase due to the redispersion of Co sulfide particles over the edges of newly formed MoS2 crystallites.

关键词： Co-Mo-based catalyst ammonium sulfide presulfidation water-gas shift

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起床咯

疯狂英语（新悦读） 2017年第4期 27-29页

作者：思苇 Red productions 不详

该起床了。早上6点，你的手还没够到闹钟，脑海里的声音就开始对你说：现在还早，外面很黑，起床太冷了。酸痛的肌肉举行卧床抗议，假装没有收到大脑发出的行动指令。脑海里的各种声音嚷嚷着，一致要求你按下睡懒觉的按键，重回梦乡，... 详细信息

该起床了。早上6点，你的手还没够到闹钟，脑海里的声音就开始对你说：现在还早，外面很黑，起床太冷了。酸痛的肌肉举行卧床抗议，假装没有收到大脑发出的行动指令。脑海里的各种声音嚷嚷着，一致要求你按下睡懒觉的按键，重回梦乡，但你可没有征求它们的意见。你选择听取的声音是那个唱反调的，它提醒说，你之所以设闹钟是有原因的。所以坐起来吧，把脚放在地板上，不要回头，因为我们有事要做。

关键词：声音睡懒觉闹钟酸

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海底小纵队

Size and support effects for CO oxidation on supported Pd catalysts

作者：英国vampire Squid productions有限公司绘

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Science China Chemistry 2010年第9期53卷 2047-2056页

作者： WANg ZhaoWen,LI Bin,CHEN MingShu,WENg WeiZheng & WAN HuiLin State Key Laboratory of Physical Chemistry of Solid Surfaces National Engineering Laboratory for green Chemical productions of Alcohols-Ethers-Esters department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen University Xiamen China National Engineering Laboratory for green Chemical productions of Alcohols-Ethers-Esters Xiamen University Xiamen China department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen China

Supporting Pd catalysts characterized significant different size distribution were obtained using PdCl2,[Pd(NH3)4](NO3)2 and Pd(acac)2 as ***-resolution transmission electron microscopy(TEM),X-ray diffraction(XRd),in-situ Fourier transform infrared spectroscopy(FTIR) and Raman spectroscopy were used to examine the dispersion of *** performance measurements show that the activities for CO oxidation increase as the Pd particle size decreases and the O2/CO ratio *** activities under oxygen rich conditions are significantly higher than those at near the stoichiometric *** on TiO2 prepared by the Pd(acac)2 precursor is highly dispersed,leading to a considerable activity for CO oxidation at near room *** oxidation on the 1 wt% Pd/TiO2 and under an O2/CO ratio of 1 characterized an apparent activation energy of 36.7 kJ/mol,which is closed to those reported for CO oxidation on the supported Au *** present work demonstrates a high catalytic activity of highly dispersed noble metals,and suggests a promising approach of using noble metals as catalysts with exceeding high efficiency.

关键词： noble metals supported palladium CO oxidation size effect support effect

Technological Impact on the Quality of Palm Oil from Burundi: Elaeis guineensis, variety of dura and Tenera

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Food and Nutrition Sciences 2024年第8期15卷 759-769页

作者： Severin Sindayikengera Jean Felix Karikurubu Josiane Manirakiza dévote Ndayikengurukiye Michel Baseka Prudent Nsabiyumva Jonathan Niyukuri department of Food Science and Technology Faculty of Agronomy and Bioengineering University of Burundi Bujumbura Burundi Food Science and Technology Research Center-CRSTA University of Burundi Bujumbura Burundi Burundi Bureau of Standards and Quality Control (BBN) Bujumbura Burundi department of Health and Animal productions Faculty of Agronomy and Bioengineering University of Burundi Bujumbura Burundi Research Centre for Animal Plant and Environmental Sciences-CRAVE University of Burundi Bujumbura Burundi

The objective of this study is to determine the factors responsible for the acidification of Burundi palm oils. The investigation of the duration of fermentation of palm fruits performed among artisanal producers found that more than 89% of producers from commune of Rumonge ferment for more than 5 days while more than 61% of those from commune of Mutimbuzi ferment for 4 days. The determination of acid value using the method of ISO 660:2009 showed that dura and Tenera varieties fermented for 4 days had respectively 5.9 ± 2.3 and 5.8 ± 1.8 mg of KOH/g of oil for clustered fruits, 7.03 ± 3.4 and 7.02 ± 3.2 mg of KOH/g for destemmed fruits. After 8 days, the acid values of dura and Tenera varieties obtained were respectively 10.9 ± 4.7 and 12.5 ± 5.4 mg KOH/g for clustered fruits, 12.5 ± 5.4 and 12.5 ± 4.1 mg KOH/g for destemmed fruits. No significant difference was recorded between varieties. On the other hand, a highly significant difference at p d between fruits fermented in the open air (e.g. around the foot of the oil palm, FFOA), in a shed when the fruits were not covered (SFNC) and in a shed when the fruits were covered by branches or straw (SFC). At 8 days of fermentation, the acid values of FFOA, SFNC and SFC were 9.1 ± 0.7 destemmed fruit and 9.1 ± 0.7 d fruit, respectively. In light of these results, the acidity of Rumonge palm oil is probably due to the long fermentation time and the technique of covering the fruits during fermentation. These results will allow producers to extract good quality oil and consequently improve the health of consumers.

关键词： Burundi dura Tenera Acid value Oil Palm

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流淌的木质香港某住宅改造

室内设计与装修 2012年第11期 52-55页

作者： davidclovers Margotpolo productions Ltd. davidclovers Margotpolo productions Ltd.

davidclovers的新作品位于香港赤柱湾，这是一个改造项目，主要目的是将建筑内的4个独立单元重新整合翻新，并将户外花园进行修整。改造包括3个重要的部分：从室内到花园的扩建，天井的重新设计，以及室内公共楼梯的改造。

关键词：住宅改造香港木质改造项目花园室内建筑户外

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人间冰雪仙境

缤纷 2009年第12期 142-145页

作者：元子 Big Ben productions ICEHOTEL

生在北方的孩子会清晰地记得冬季里白雪皑皑的美景。大自然神奇的力量让纷繁世界顿时纯然,冷硬的北风都被这雀跃的晶莹软化。再寒冷,孩子们都会不顾一切地扑倒在厚实圆滚的雪堆上,享受一场畅快淋漓的雪仗。当浪漫的北欧人遇见寒天大雪... 详细信息

生在北方的孩子会清晰地记得冬季里白雪皑皑的美景。大自然神奇的力量让纷繁世界顿时纯然,冷硬的北风都被这雀跃的晶莹软化。再寒冷,孩子们都会不顾一切地扑倒在厚实圆滚的雪堆上,享受一场畅快淋漓的雪仗。当浪漫的北欧人遇见寒天大雪更是进发出耀眼的灵感。

关键词：人间仙境畅快淋漓北欧人在北方世界规模糜鹿角创作主题宗教氛围聚并自然美景

Quality oriented multimode processes monitoring based on a novel hierarchical common and specific structure with different order information

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Chinese Journal of Chemical Engineering 2021年第11期34卷 183-192页

作者： Yun Wang Yuchen He de gu Mechanical and Electrical Engineering department Zhejiang Tongji Vocational College of Science and TechnologyHangzhou 311231China College of Mechanical&Electrical Engineering China Jiliang UniversityHangzhou 310018China School of Internet of Things Engineering Jiangnan UniversityWuxi 214122China

due to higher demands on product diversity,flexible shift between productions of different products in one equipment becomes a popular solution,resulting in existence of multiple operation modes in a single *** order to handle such multi-mode process,a novel double-layer structure is proposed and the original data are decomposed into common and specific characteristics according to the relationship between variables among each *** addition,both low and high order information are considered in each *** common and specific information within each mode can be captured and separated into several subspaces according to the different order *** performance of the proposed method is further validated through a numerical example and the Tennessee Eastman(TE)*** with previous methods,superiority of the proposed method is validated by the better monitoring results.

关键词： Multimode processes monitoring dual iterations double layer information extraction High order expansion Quality related

The Properties and Applications of MoS_2/Ti Composite Coatings in dry Cutting and Forming

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材料热处理学报 2004年第5B期25卷 894-898页

作者： XiaolingZhang HailinSun d.Becker S.Wagner d.g.Teer TeerCoatingsLtd. WestStineHouseBerryHillIndustrialEstateDroitwichWorcestershireUK InstituteforMetalFormingTechnology stuttgartUniversityStuttgartGermany

MoSi/Ti composite coatings (MoST?), have been deposited by a closed-field unbalanced magnetron sputter ion-plating system. The high ion-current densities at low substrate bias voltage of the system ensures that the MoST? coatings are characteristic of dense coherent structures, with high adhesion (critical scratch load above 120 N), high load bearing capacity up to 5 gPa., low friction (0.02-0.1), high wear resistance (less than 4xlO"17 m3/N m) even at a relative humidity of 40%, and high temperature resistance up to 350 °C. The successful applications of MoST? coatings in large- scale productions for dry cutting and forming, with increasing lifetime and productivity are presented.

关键词： MoS2/Ti复合涂层干切割低摩擦力磁控管溅射