检索结果-南通市图书馆

Influence of Additives on Hydrodesulfurization Activity of Fe-Mo/Al_2O_3 Catalysts

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2006年第3期8卷 49-52页

作者： Tuktin Balga T Zakumbaeva gaukhar D Du Wei Institute of Organic Catalysis and Electrochemistry the Ministry of Education and ScienceAlmaty 480100Republic of Kazakhstan School of Materials Science and Engineering Beijing University of Science and Technology Beijing 100083 China

Based on the study relating to the influence of additives on the hydrodesulfurization performance of Fe-Mo-Al2O3 catalysts, it was found out that the introduction of additives could increase considerably the activity of Fe-Mo/Al2O3 catalysts in the reaction of hydrodesulfurization of gasoline and diesel fractions. The introduction of zeolites (HY, HZSM) and other additives could lead to an increase of the concentration of acid centers, which were able to react with sulfur compounds, along with an increase of total catalysts’ pore volume, which could improve the capability of catalyst to adsorb the hydrogen and feed oil.

关键词： hydrodesulfurization catalyst activity modification

Economic Factors in the Use of Renewable Energy Sources in Kazakhstan

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Agricultural Science and Technology(B) 2015年第2期5卷 129-134页

作者： gaukhar Seitkhamzina Department of Economy and Management Almaty Academy of Economy and Statistics Almaty 050006 Kazakhstan

The purpose of this research was to study economic incentives to use renewable energy sources in the Republic of Kazakhstan and to give suggestions for production and circulation of the ＂green＂ certificates as a new financial instrument. The author analyzed European Union and Kazakhstani experience of economic incentives to reduce emissions and introduction of renewable energy sources. As a result of conducted research, the proposal to produce and circulate new financial instruments in Kazakhstan is made; as well as economic and environmental factors of renewable energy sources in the Republic of Kazakhstan are defined.

关键词： Renewable energy sources financial instruments "green" certificates "green" economy.

Catalytic Conversion of Bioethanol to Ethylene

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Chemistry and Chemical Engineering 2013年第11期7卷 1021-1025页

作者： Tungatarova Svetlana Yergaziyeva gaukhar Shaizadauly Erdaulet Shapovalov Anatolii D. V. Sokolsky Institute of Organic Catalyst and Electrochemistry Almaty 050010 Kazakhstan

Dehydration of bioethanol to ethylene has been investigated on supported cerium-containing catalysts and with additives of lanthanum. It was established that the modification of the 3% Ce/γ-Al2O3 catalyst by lanthanum increases catalyst dispersion, thereby increasing yield of the main product ethylene. The highest yield of ethylene is observed on the CeLa/γ/-A12O3 catalyst under optimal conditions （space velocity： 6,000 hl, bioethanol concentration： 21.7 g/m3 and T = 400℃）.

关键词： Bioethanol ethylene catalysts.

Surface Active Additives for Galvanic Coating of High Quality Obtainment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

材料科学与工程（中英文A版） 2013年第8期3卷 550-553页

作者： Nagima Dzhakipbekova Saule Sakibayeva Anastassiya Beloborodova Nurzhamal Tasanbayeva Gulsara Yerkebayeva gaukhar Turebekova Gulmira Bimbetova M. Auezov South Kazakhstan State University Shymkent 160012 Kazakhstan

This article is devoted to research of surface active additive, acrylic reagent of the "Nakphlok" in the process of galvanic coating obtainment. It was proved that the copper coating obtained in the presence of electr... 详细信息

关键词：活性添加剂表面活性涂料电偶品质电解液添加剂镀层质量丙烯酸

Contamination of Camel Milk (Heavy Metals, Organic Pollutants and Radionuclides) in Kazakhstan

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Protection 2011年第1期2卷 90-96页

作者： gaukhar Konuspayeva Stefan Jurjanz Gerard Loiseau Vincent Barci Shynar Akhmetsadykova Aliya A. Meldebekova Bernard Faye 不详

In Kazakhstan, camel breeding mainly occupies areas sometimes close to polluting industries or other sources of pollu- tion as industrial agriculture, mainly cotton. Products issued from camel farms close to these sources as camel raw milk and fermented milk (shubat), wool and meat, traditionally used by humans could be contaminated. We investigated camel raw milk and fermented milk for the content of heavy metals (lead, cadmium, zinc and copper), radionuclide and some organic pollutants (PAHs, pesticides and indicator PCBs) in samples from different regions with a priori high risk of pollution (Atyrau, Kyzylorda, South-Kazakhstan and Almaty region). In the present paper, only some milk samples presented high lead concentration (> 500 ppb). After analysis for organic pollutants, it was observed some traces of hexachlorocyclohexane, lindane, hexanchlorothalonil in milk samples from different regions. One sample was also slightly contaminated with radionuclide. These preliminary results allow establishing a first map of risk for camel farming. As the whole, South-Kazakhstan appeared the most exposed region.

关键词： Camel Milk Pollutant Heavy Metal Pesticides Radionuclides

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

哈萨克斯坦:地缘政治交叉点上的博弈

国际观察 2017年第3期 116-128页

作者：汪宁 K.高哈尔上海外国语大学国际关系与公共事务学院

自独立以来,哈萨克斯坦在国际舞台上的地位逐步上升,影响力与日俱增,正在发展成为一个区域性的重要国家。哈萨克斯坦的快速发展,与其战略地理位置、丰富的能源、巨大的生产和科技潜力以及能源运输基础设施的良好发展前景密切相关。本文... 详细信息

自独立以来,哈萨克斯坦在国际舞台上的地位逐步上升,影响力与日俱增,正在发展成为一个区域性的重要国家。哈萨克斯坦的快速发展,与其战略地理位置、丰富的能源、巨大的生产和科技潜力以及能源运输基础设施的良好发展前景密切相关。本文以哈萨克斯坦如何应对地缘政治的挑战为切入点,对世界大国在中亚地区的争夺,哈萨克斯坦如何利用自身的优势积极参与国际政治博弈做出符合国家利益的道路选择进行分析。

关键词：哈萨克斯坦国际社会地缘政治中亚