scholarly journals Rendering Fat and Heavy Fischer-Tropsch Waxes Mixtures (0–100%) Fast Pyrolysis Tests for the Production of Ethylene and Propylene

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 367
Author(s):  
Martyna Murat ◽  
Zahra Gholami ◽  
Josef Šimek ◽  
Daily Rodríguez-Padrón ◽  
José Miguel Hidalgo-Herrador

A great emphasis is placed on searching for efficient sources to produce renewable fuels due to the actual trends in avoiding the use of fossil resources to mitigate the environment’s deterioration. Thus, the use of waste from the food or wood industry for the production of biofuels is widely researched and may contribute to sustainable general development. Rendered fat and Fischer-Tropsch waxes are high-energy materials which could be used for the pyrolysis reaction. Therefore, in this study, the effect of reaction parameters and feedstock composition on the distribution of the pyrolysis products has been examined. The experiments were carried out in a nitrogen atmosphere in a multi-shot pyrolizer instrument equipped with GC-FID. First, the influence of the temperature was examined at 785, 800, and 815 °C. The highest yield to olefins was observed at 815 °C. The effect of triglycerides and paraffins contents (0–100% with 10% ramp) in the feedstock on the product composition was investigated at 815 °C. The gas chromatography analyses revealed that the feedstock composition did not significantly affect the product composition due to the high temperature and the long linear chain structure similarities between the free fatty acids and Fischer-Tropsch waxes.

2015 ◽  
Vol 71 (12) ◽  
pp. 1033-1036 ◽  
Author(s):  
Nobuyuki Matsushita ◽  
Ayako Taira

The title compound,catena-poly[[[bis(ethylenediamine-κ2N,N′)platinum(II)]- μ-chlorido-[bis(ethylenediamine)platinum(IV)]-μ-chlorido] tetrakis{4-[(4-hydroxyphenyl)diazenyl]benzenesulfonate} dihydrate], {[PtIIPtIVCl2(C2H8N2)4](HOC6H4N=NC6H4SO3)4·2H2O}n, has a linear chain structure composed of square-planar [Pt(en)2]2+(en is ethylenediamine) and elongated octahedraltrans-[PtCl2(en)2]2+cations stacked alternately, bridged by Cl atoms, along thebaxis. The Pt atoms are located on an inversion centre, while the Cl atoms are disordered over two sites and form a zigzag ...Cl—PtIV—Cl...PtII... chain, with a PtIV—Cl bond length of 2.3140 (14) Å, an interatomic PtII...Cl distance of 3.5969 (15) Å and a PtIV—Cl...PtIIangle of 170.66 (6)°. The structural parameter indicating the mixed-valence state of the Pt atom, expressed by δ = (PtIV—Cl)/(PtII...Cl), is 0.643.


1980 ◽  
Vol 35 (6) ◽  
pp. 676-679 ◽  
Author(s):  
G. C. Papavassiliou ◽  
D. Layek

Abstract The electronic and resonance Raman spectra of new mixed-valence compounds of the type M2ʹ[M(L)X3][M(L)X5], where Mʹ = K, NH4, M = Pt or Pd, L = NH3 or pyridine, and X = Cl, Br or I, have been studied. The single-crystal polarized reflectance spectra indicate the one-dimensional semiconductor behaviour. The polarized resonance Raman spectra confirm the --M(II)--X-M(IV)-X linear chain structure, which is in accordance with the X-ray results. The polarization of M-N bands can be explained by the Snyder's theory (1971).


2008 ◽  
Vol 17 (10) ◽  
pp. 2336-2344 ◽  
Author(s):  
YOSHIKO KANADA-EN'YO ◽  
MASAAKI KIMURA ◽  
YASUTAKA TANIGUCHI ◽  
TADAHIRO SUHARA

We report three-center cluster structures in the excited states of 11 B (11 C ), 8 He and 14 C based on theoretical calculations with the antisymmetrized molecular dynamics (AMD). In particular we discuss the cluster gas-like states 2α + t(2α+3 He ) in 11 B (11 C ) and α + 2n + 2n in 8 He . In 14 C , the 3α linear-chain structure is discussed.


2001 ◽  
Vol 62 (8) ◽  
pp. 1481-1491 ◽  
Author(s):  
Ayi A Ayi ◽  
S Neeraj ◽  
Amitava Choudhury ◽  
Srinivasan Natarajan ◽  
C.N.R Rao

Author(s):  
Christy P. George ◽  
Ekta Sangtani ◽  
Rajesh G. Gonnade

In the title co-crystal, C22H24ClFN4O3·C9H16O4, gefitinib (GTB; systematic name: quinazolin-4-amine) co-crystallizes with azelaic acid (AA; systematic name: nonanedioic acid). The co-crystal has the monoclinic P21/n centrosymmetric space group, containing one molecule each of GTB and AA in the asymmetric unit. A structure overlay of the GTB molecule in the co-crystal with that of its most stable polymorph revealed a significant difference in the conformation of the morpholine moiety. The significant deviation in the conformation of one of the acidic groups of azelaic acid from its usual linear chain structure could be due to the encapsulation of one acidic group in the pocket formed between the two pincers of GTB namely, the morpholine and phenyl moieties. Both GTB and AA molecules form N—H...O, O—H...N, C—H...O hydrogen bonds with C—H...F close contacts along with off-stacked aromatic π–π interactions between the GTB molecules.


2009 ◽  
Vol 24 (11) ◽  
pp. 2183-2190
Author(s):  
TADAHIRO SUHARA ◽  
YOSHIKO KANADA-EN'YO

Structure of excited states in 14 C were investigated with a method of the antisymmetrized molecular dynamics model. Variation with constraints on the quadrupole deformations (β, γ) was performed, and the configurations were superposed within the AMD framework. Above the ground band, three excited bands with the developed 3α-cluster core structures were suggested. Characteristic structures such as a triaxial structure and a linear-chain structure appear in the excited bands. It was found that the 10 Be correlation exists in the linear-chain structure.


1975 ◽  
Vol 63 (5) ◽  
pp. 1926-1942 ◽  
Author(s):  
Karl W. Plumlee ◽  
Brian M. Hoffman ◽  
James A. Ibers ◽  
Zoltan G. Soos

2010 ◽  
Vol 833 (1-4) ◽  
pp. 1-17 ◽  
Author(s):  
J.A. Maruhn ◽  
N. Loebl ◽  
N. Itagaki ◽  
M. Kimura

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