scholarly journals Liquid Phase Hydrogenation of MIBK over M/CsPW (M = Ag, Ru, Pt, and Pd)

Catalysts ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 47 ◽  
Author(s):  
Abdullah M. Alhanash ◽  
Amal A. Atran ◽  
Murad Eissa ◽  
Mhamed Benaissa ◽  
Mohamed S. Hamdy
Keyword(s):  
Liquid Phase ◽  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
X Ray Diffraction ◽  
Metallic Nanoparticle ◽  
Isobutyl Ketone ◽  
X Ray ◽  
Liquid Phase Hydrogenation ◽  
Loading Amount ◽  
N2 Sorption

Four different metal nanoparticles (metal = Ag, Ru, Pt, or Rh) were impregnated on the acidic cesium salt of tungstophosphoric acid Cs2.5H0.5PW12O40 (CsPW) with a loading amount of 2 wt%. The prepared catalysts were characterized by using X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FTIR), N2 sorption measurements, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). Results confirmed the formation of highly distributed metallic nanoparticle centres over the acidic CsPW. The catalytic activity of the prepared catalysts were evaluated in the liquid phase hydrogenation of methyl isobutyl ketone (MIBK) to 2-methylpentane (2-MP) at 453 K. Pd-CsPW showed the highest activity compared to other catalysts, where 10% conversion was obtained with 91% selectivity after 4 h’s reaction time.

Crystal structure of fractionally crystallized waxes isolated from crude oil

2017 ◽  
Vol 50 (2) ◽  
pp. 639-642
Author(s):  
Manisha Sahai ◽  
Ajay Kumar ◽  
Sanat Kumar
Keyword(s):  
Crystal Structure ◽  
Gas Chromatography ◽  
Crude Oil ◽  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
X Ray Diffraction ◽  
Isobutyl Ketone ◽  
X Ray ◽  
Petroleum Wax ◽  
Crystalline Nature

A petroleum wax has been extracted from crude oil and fractionated into two parts, depending on its solubility in methyl isobutyl ketone–toluene solvent at temperatures of 298 and 313 K. The wax and its two derivatives have been analyzed for composition and crystalline nature using various techniques including gas chromatography, NMR and X-ray diffraction. It has been observed that the crystalline structure of the fractionally precipitated waxes is significantly different from the structure of the parent wax present in the crude oil.

Enhanced stability of Pd/SPS catalyst over the one-pot liquid-phase synthesis of methyl isobutyl ketone by adding GO

2019 ◽  
Vol 478 ◽  
pp. 110609 ◽  
Author(s):  
Yifan Zhu ◽  
Baining Lin ◽  
Yingjie Hu ◽  
Zhihui Cai ◽  
Huasheng Xie ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
One Pot ◽  
Phase Synthesis ◽  
The One ◽  
Enhanced Stability

One-Step Synthesis of Methyl Isobutyl Ketone from Acetone Catalysed by Ni-Zirconia

2011 ◽  
Vol 391-392 ◽  
pp. 908-911 ◽  
Author(s):  
Chang Hai Du ◽  
Zhuo Min Yang ◽  
Guo Bin Zhao ◽  
Li Jie Zhu
Keyword(s):  
Liquid Phase ◽  
Methyl Isobutyl Ketone ◽  
Nickel Content ◽  
Reduction Temperature ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Preparation Conditions ◽  
Zirconia Catalyst ◽  
One Step ◽  
The One

The one-step synthesis of methyl isobutyl ketone from acetone (MIBK) and H2 in liquid phase was studied over Ni-zirconia catalyst prepared by precipitation. The performances of Ni/ZrO2 catalysts were evaluated by the conversion of acetone and the selectivity of MIBK. The effect of different preparation conditions such as aging temperature, calcination temperature, nickel content and reduction temperature was investigated. The results showed that high acetone conversions of up to 33% and MIBK selectivities of up to 85% were recorded at a nickel content of 13.0 wt % and the reduction temperature of 400°C.

X-Ray Contact Imaging: the Technique

1985 ◽  
Vol 43 ◽  
pp. 596-599
Author(s):  
R. Feder ◽  
V. Mayne-Banton
Keyword(s):  
Methyl Isobutyl Ketone ◽  
Three Dimensional ◽  
Photon Density ◽  
X Rays ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
X Ray ◽  
Biological Objects ◽  
Relief Structure ◽  
Density Map

Until recently, instruments used to image small biological objects directly have involved the use of light microscopy or electron microscopy. Presently, the use of x-rays has emerged as another probe to investigate details in biological specimens. X-rays can be used either by using an x-ray “lens”, which will be discussed by others at this symposium or by a direct contact “print” of the object on a special emulsion. This latter method is what will be discussed in this paper.The object to be ‘photographed’ is prepared on a substrate and then placed in contact with a resist such as poly- methyl-methacrylate (PMMA). This polymer has the property that when it is exposed to x-rays and then placed in a solution of methyl isobutyl ketone (MIBK) it will 'develop’ depending on the number of x-ray photons absorbed in the PMMA. This three dimensional relief structure is actually a photon density map of the specimen.

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