Results 271 to 280 of about 74,566 (300)

In‐situ hydrolysis/methylation pyrolysis CGC for the characterization of polyaramides

Journal of Microcolumn Separations, 1995
AbstractSome parameters influencing the in‐situ methylation by tetramethylammonium hydroxide (TMAH) during pyrolysis have been investigated with model compounds and polyaramides. Both pyrolysis temperature and excess TMAH (pH effect) influence the methylation of carboxy‐, aromatic amino‐, and hydroxyl‐functional groups. While the solvent of TMAH, i.e.,
Arnold Venema, Renie C. A. Boom‐Van Geest   +1 more
openaire   +1 more source

Migration mechanism of pyrolysis oil during oil shale in situ pyrolysis exploitation

Energy, 2023
Wei Guo, Xu Zhang, Youhong Sun, Qiang Li, Zhao Liu   +4 more
openaire   +1 more source

Study on in-situ and ex-situ catalytic pyrolysis of waste tires based on low-cost catalysts

Waste Management
With the increase in the quantity of waste tires, the proper disposal of waste tires has received increasing attention. Pyrolysis is an environmentally friendly technology that converts waste tires into usable resources. However, the added value of the pyrolysis products is relatively low.
Kongshuo, Wang, Jiayi, Zhan, Haojun, Zang, Xiaokang, Liu, Haoyu, Wang, Zhishen, Peng, Chuansheng, Wang, Xiaolong, Tian   +7 more
openaire   +2 more sources

Role of in situ (in contact with biomass) and ex situ (in contact with pyrolysis vapors) transition metal catalysts on pyrolysis of cherry pits

Fuel, 2023
Andrew H. Hubble, Bridget A. Childs, Matteo Pecchi, Hanifrahmawan Sudibyo, Jefferson W. Tester, Jillian L. Goldfarb   +5 more
openaire   +1 more source

In situ modification of pyrolysis products of macromolecules in an analytical pyrolyser

Journal of Analytical and Applied Pyrolysis, 2005
Abstract An application of pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) is presented for the fast on-line testing of solid catalysts activity in upgrading pyrolysis oils and/or gases of natural and synthetic polymers. Evaluation of the chemical conversion by a catalyst is simply and quickly performed in a Py-GC/MS instrument without any ...
openaire   +1 more source

Mechanism of lignin pyrolysis investigated by in-situ rheology and ex-situ spectroscopic methods

2014
The thermochemical conversion of lignin has received an increasing interest in the frame of different biorefinery concepts for the production of chemicals or energy. It is needed to better understand the physical and chemical conversion of lignin for feeder and reactor designs.
Shrestha, Binod, Hoppe, Sandrine, Ghislain, Thierry, Marchal, Philippe, Brosse, Nicolas, Dufour, Anthony   +5 more
openaire   +1 more source

Pyrolysis of subbituminous coal in relation to in-situ coal gasification

Fuel, 1978
Abstract Pyrolysis of Roland Seam (Wyodak) subbituminous coal has been investigated from 383 to 1273 K in an inert gas at 0.1 MPa (1 bar). The gas, liquid (condensibles at 0 °C) and solid products were analysed and characterized. Evolution of the major noncondensible gas products was measured quantitatively.
openaire   +1 more source

Effect of Ni-Fe/CaO-Al2O3 catalysts on products distribution in in-situ and ex-situ catalytic pyrolysis of Chinese herb residue

Journal of Analytical and Applied Pyrolysis, 2023
Shengxiong Huang, Mao Xia
exaly  

In situ FT-IR analysis of coke formation mechanism during Co-pyrolysis of low-rank coal and direct coal liquefaction residue

Renewable Energy, 2021
Yonghui Song, Xinzhe Lan
exaly  

Pyrolysis kinetics, thermodynamics of PTA sludge and product characterization of cyclic in-situ catalytic pyrolysis by using recycled char as a catalyst

Energy, 2022
Hongyu Zhao, Yuezhao Zhu
exaly