Results 171 to 180 of about 106,557 (221)

Characterization of the tetramethylammonium hydroxide thermochemolysis products of carbohydrates

Journal of Analytical and Applied Pyrolysis, 1999
Abstract The identification of the thermochemolysis products (in the presence of tetramethylammonium hydroxide, TMAH) of carbohydrates is presented. Analysis was carried out using on-line flash pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and off-line flash (vacuum) pyrolysis followed by GC/MS.
D Fabbri
exaly   +2 more sources

The effect of tetramethylammonium hydroxide in comparison with the effect of sodium hydroxide on the slow pyrolysis of cellulose

Journal of Analytical and Applied Pyrolysis, 2003
Abstract The effect of two bases, tetramethylammonium hydroxide (TMAH) used in thermally assisted hydrolysis and methylation (THM) analysis of biopolymers and NaOH generally used in cellulose and textile industry, was compared in the pyrolysis of cotton cellulose at very low concentrations using differential thermal analysis, data obtained from ...
I Tanczos, Gy Pokol, J Borsa, T Tóth, H Schmidt   +4 more
exaly   +2 more sources

Pilot-scale production of biodiesel from waste fats and oils using tetramethylammonium hydroxide [PDF]

Waste Management, 2016
Annually, a great amount of waste fats and oils not suitable for human consumption or which cannot be further treated are produced around the world. A potential way of utilizing this low-cost feedstock is its conversion into biodiesel.
Jiří Pecha, Karel Kolomaznik
exaly   +2 more sources

Isolation and physiological properties of methanogenic archaea that degrade tetramethylammonium hydroxide

Applied Microbiology and Biotechnology, 2023
Tetramethylammonium hydroxide (TMAH) is a known toxic chemical used in the photolithography process of semiconductor photoelectronic processes. Significant amounts of wastewater containing TMAH are discharged from electronic industries. It is therefore attractive to apply anaerobic treatment to industrial wastewater containing TMAH.
Akinori Iguchi, Yasuyuki Takemura, Tsuyoshi Danshita, Takuya Kurihara, Masataka Aoki, Saori Hori, Toru Shigematsu, Kazuaki Syutsubo   +7 more
openaire   +2 more sources

"Mercerization" of Cotton with Tetramethylammonium Hydroxide

Textile Research Journal, 2003
Bleached cotton fabric is treated with an aqueous solution of tetramethylammonium hydroxide (TMAH) or with sodium hydroxide in various concentrations with or without tension. The degree of "mercerization" is characterized by the crystallinity, iodine sorp tion capacity, water retention values before and after drying, dye uptake, and color strength. The
T. Tóth, J. Borsa, J. Reicher, P. Sallay, I. Sajó, I. Tanczos   +5 more
openaire   +1 more source

Methanogenic degradation of tetramethylammonium hydroxide by Methanomethylovorans and Methanosarcina

Journal of Hazardous Materials, 2018
This study evaluated the methanogens responsible for methanogenic degradation of tetramethylammonium hydroxide (TMAH) in a continuous flow bioreactor. The enriched methanogens attained an estimated maximum specific TMAH degradation rate and half-saturation constant of 39.5 mg TMAH/gVSS/h and 820 mg/L, following the Monod-type kinetic expression for ...
Tai-Ho Hu, Liang-Ming Whang, Chi-Yu Huang   +2 more
openaire   +2 more sources

Siliceous and dolomitic-bearing aggregates reaction in Tetramethylammonium hydroxide

Construction and Building Materials, 2021
Abstract Due to argillaceous dolomitic limestones usually contain more or less quartz or micro-crystalline quartz, based on existence of alkali-silica gels in concretes with dolomitic aggregates, lead to alkali-carbonation reaction (ACR) coexists with alkali-silica reaction (ASR) in concrete.
Bi Chen, Min Deng, Xiaojun Huang, Liwu Mo, Bei Huang, Xianghui Lan   +5 more
openaire   +1 more source

Adsorption of Tetramethylammonium Hydroxide on Activated Carbon

Journal of Environmental Engineering, 2012
Tetramethylammonium hydroxide (TMAH) is widely used in manufacturing thin-film transistor liquid crystal displays (TFT-LCD) and semiconductors.
Prahas, D., Liu, J.C., Ismadji, S., Wang, M.-J.   +3 more
openaire   +2 more sources

Effect of tetramethylammonium hydroxide on cotton cellulose compared to sodium hydroxide

Macromolecular Chemistry and Physics, 2000
Cotton fabric was treated with aqueous solutions of tetramethylammonium hydroxide (TMAH) and sodium hydroxide of various concentrations. The sorption of both chemicals, the specific weight of the fabric, the cellulose I - cellulose II transition, the BET surface area, the iodine sorption capacity, and the water retention value were measured and ...
Ildiko Tanczos, Judit Borsa, István Sajó, Krisztina László, Zilia Abigel Juhász, Tünde Tóth   +5 more
openaire   +1 more source

Corrosion of porous silicon in tetramethylammonium hydroxide solution

Corrosion Science, 2014
Abstract Corrosion of porous silicon in tetramethylammonium hydroxide (TMAH) solution was studied using weight loss measurements and scanning electron microscope. The effects of temperature, concentration of TMAH and volume ratio of ethanol in 1.0 M TMAH on corrosion rate and corrosion time were elaborately investigated.
Chuan Lai, Xue-Ming Li, Li-Ke Zou, Qiang Chen, Bin Xie, Yu-Lian Li, Xiao-Lin Li, Zhi Tao   +7 more
openaire   +1 more source