Coke formation on catalysts during the hydroprocessing of heavy oils
M Absi-Halabi, A Stanislaus, DL Trimm - Applied catalysis, 1991 - Elsevier
Metal sulfide based hydrotreating catalysts used with heavy oils are known to deactivate
during use. Initial deactivation is rapid and is associated with the deposition of …
during use. Initial deactivation is rapid and is associated with the deposition of …
Modeling of hydrotreating catalyst deactivation for heavy oil hydrocarbons
Hydrotreating is one of the most used process for eliminating impurities in heavy oil
fractions, in which fixed-bed reactor has been used much more extensively. Nevertheless …
fractions, in which fixed-bed reactor has been used much more extensively. Nevertheless …
Deactivation of hydroprocessing catalysts
E Furimsky, FE Massoth - Catalysis Today, 1999 - Elsevier
Hydroprocessing of commercial feeds is extensively practised in the petroleum industry, and
to some extent in coal liquefaction and in upgrading of synthetic fuels. The process …
to some extent in coal liquefaction and in upgrading of synthetic fuels. The process …
Asphaltene molecular structure and chemical influences on the morphology of coke produced in delayed coking
M Siskin, SR Kelemen, CP Eppig, LD Brown… - Energy & …, 2006 - ACS Publications
The average chemical structure of asphaltenes present in a vacuum resid feed is related to
the morphology of the coke that is produced in a delayed coker (shot coke vs sponge coke) …
the morphology of the coke that is produced in a delayed coker (shot coke vs sponge coke) …
The quantitative assessment of coke morphology based on the Raman spectroscopic characterization of serial petroleum cokes
K Chen, H Zhang, UK Ibrahim, WY Xue, H Liu, A Guo - Fuel, 2019 - Elsevier
A series of petroleum coke species obtained from commercial plants has been studied by
polarized-light microscopy observation (PMO), scanning electron microscope (SEM), and …
polarized-light microscopy observation (PMO), scanning electron microscope (SEM), and …
Production of bio-oils and bio-char from Arundo donax through microwave assisted pyrolysis in a multimode batch reactor
Several organs (rhizomes, stems and leaves) of Arundo donax, a perennial cane ubiquitary
in the mediterranean area, were pyrolyzed using a microwave assisted pyrolysis with carbon …
in the mediterranean area, were pyrolyzed using a microwave assisted pyrolysis with carbon …
Influence of presence/addition of asphaltenes on semi-coke textures and mesophase development in petroleum feed stocks
In this paper, effect of asphaltenes on optical textures of semi-coke and pitches prepared
from vacuum residues (VRs) and their deasphalted oils (DAOs) during heat treatment at a …
from vacuum residues (VRs) and their deasphalted oils (DAOs) during heat treatment at a …
Carbonization of petroleum feedstocks I: Relationships between chemical constitution of the feedstocks and mesophase development
The relationships between the chemical constitution of the petroleum feedstocks and the
mesophase development were investigated. A range of coker feedstocks that were …
mesophase development were investigated. A range of coker feedstocks that were …
Bio-oil from residues of short rotation coppice of poplar using a microwave assisted pyrolysis
Stump-roots and leaves from different residues of short rotation coppice (SRC) of poplar
clones were transformed with microwave assisted pyrolysis to produce bio-oils. These …
clones were transformed with microwave assisted pyrolysis to produce bio-oils. These …
Carbonization of petroleum feedstocks II: Chemical constitution of feedstock asphaltenes and mesophase development
The characterization of the asphaltene fractions of a range of petroleum feedstocks by FT-IR,
1 H and 13 C NMR spectroscopy indicated distinct differences in the molecular structure of …
1 H and 13 C NMR spectroscopy indicated distinct differences in the molecular structure of …