Carbon-Supported KCoMoS2 for Alcohol Synthesis from Synthesis Gas

KCoMoS2 was supported on various carbon support materials to study the support effect on synthesis gas conversion. Next to two activated carbons with high micropore volume, a traditional alumina (γ-Al2O3) support and its carbon coated form (CCA) were studied for comparison. Coating alumina with carbon increases the selectivity to alcohols, but the AC-supported catalysts show even higher alcohol selectivities and yields, especially at higher temperatures where the conversions over the AC-supported catalysts increase more than those over the γ-Al2O3-based catalysts. Increasing acidity leads to decreased CO conversion yield of alcohols. The two activated-carbon-supported catalysts give the highest yield of ethanol at the highest conversion studied, which seems to be due to increased KCoMoS2 stacking and possibly to the presence of micropores and low amount of mesopores

Study Of (1-Pentyl-1H-Indol-3-Il) (4-Ethylnaphtalene-1-Il)Methanone Adsorption on People Hair

Изучена адсорбция (1-пентил-1Н-индол-3-ил)(4-этилнафталин-1-ил)метанона на измельченных темных и светлых волосах. Определена максимальная предельная адсорбция для обоих типов волос. Построены изотермы адсорбции и проанализированы с использованием модельных уравнений. Установлено, что наиболее точно адсорбция (1-пентил-1Н-индол-3-ил) (4-этилнафталин-1-ил)метанона описывается моделью Фрейндлиха, которая характеризует гетерогенность поверхности волос. Определено общее число электроноакцепторных центров поверхности волос по адсорбции пиридина. Установлена зависимость предельной адсорбции (1-пентил-1Н-индол-3-ил)(4-этилнафталин-1-ил)метанона от кислотности поверхности. Высказано предположение о зависимости адсорбции анализируемого вещества на волосах от количества пигмента меланина, что объясняет превосходство предельной адсорбции на темных волосах по сравнению со светлымиAdsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone on blended black and white hair samples was studied. Absolute adsorption amount was calculated for both hair types. Also adsorption isotherms were constructed and analyzed using different adsorption models. It was estimated that adsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone is best described by Freindlich model which characterizes hair surface heterogeneity. Total amount of electron acceptor centers of hair surface was estimated using pyridine adsorption. Depending absolute adsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone on surface acidity was found. It was suggested that analyte’s adsorption on hair depends on melanin amount. This idea explains that absolute adsorption on black hair is higher than on whit

LATE INTRA-MOULD GRAPHITIZING MODIFYING IS EFFECTIVE WAY OF PREVENTION OF CHILLING EFFECT IN IRON CASTING

The efficiency of the method of late intra-form graphitizing modifying of composition of modifiers Superseed 75, SB5 and фс65р3М1 as compared to ladle modification for disposal of such foundry defect as corner chill is shown

THE MODERN APPROACH TO THE QUALITY INCREASE OF CASTING BLOCKS AND HIGH-PERFORMANCE COMPOUNDS FOR PROCESSING OF MELTS ON THE BASIS OF ALUMINUIM

In the article there is given the group of measures, aimed at increase of quality of cast ingots and of high-performance compounds for processing of melts on the basis of aluminium

EFFECTIVE WAYS OF THE REFINING-MODIFYING PROCESSING OF HYPEREUTECTIC SILUMINS

New effective preparation for modifying of hypereutectic silumins AK18 — piston alloy is created on the basis of research-experimental-industrial works