Tris(tert-heptyl)-N-alkyl-1-ammonium bromides—Powerful THF hydrate crystal growth inhibitors and their synergism with poly-vinylcaprolactam kinetic gas hydrate inhibitor

2016 ◽  
Vol 144 ◽  
pp. 275-282 ◽  
Author(s):  
Mohamed F. Mady ◽  
Malcolm A. Kelland
Keyword(s):  
Crystal Growth ◽  
Gas Hydrate ◽  
Growth Inhibitors ◽  
Hydrate Crystal

Critical Growth Rate of Hydrate Crystal Growth Inhibitors in the Low Growth Rate Region

2021 ◽  
Author(s):  
Michihiro Muraoka ◽  
Malcolm A. Kelland ◽  
Yoshitaka Yamamoto ◽  
Kiyofumi Suzuki
Keyword(s):  
Growth Rate ◽  
Crystal Growth ◽  
Critical Growth ◽  
Growth Inhibitors ◽  
Rate Region ◽  
Hydrate Crystal

Tetrahydrofuran Hydrate Crystal Growth Inhibition with Synergistic Mixtures: Insight into Gas Hydrate Inhibition Mechanisms

2017 ◽  
Vol 31 (8) ◽  
pp. 8109-8115 ◽  
Author(s):  
Malcolm A. Kelland ◽  
Ade Rahma Dyah Hartanti ◽  
Walter Gabriel Zambrana Ruysschaert ◽  
Henning Blomfeldt Thorsen
Keyword(s):  
Crystal Growth ◽  
Growth Inhibition ◽  
Gas Hydrate ◽  
Hydrate Crystal ◽  
Crystal Growth Inhibition ◽  
Insight Into

Alkyl-chain disorder in tetraisohexylammonium bromide

2012 ◽  
Vol 68 (4) ◽  
pp. o152-o155 ◽  
Author(s):  
Malcolm A. Kelland ◽  
Amber L. Thompson
Keyword(s):  
Crystal Structure ◽  
Crystal Growth ◽  
Alkyl Chain ◽  
Growth Inhibitor ◽  
Ammonium Cation ◽  
Asymmetric Unit ◽  
Bromide Anion ◽  
Alkyl Chains ◽  
Hydrate Crystal ◽  
Structure Ii Clathrate Hydrate

Tetraisohexylammonium bromide [systematic name: tetrakis(4-methylpentyl)azanium bromide], C24H52N+·Br−, is a powerful structure II clathrate hydrate crystal-growth inhibitor. The crystal structure, in the space groupP3221, contains one ammonium cation and one bromide anion in the asymmetric unit, both on general positions. At 100 K, the ammonium cation exhibits one ordered isohexyl chain and three disordered isohexyl chains. At 250 K, all four isohexyl chains are disordered. In an effort to reduce the disorder in the alkyl chains, the crystal was thermally cycled, but the disorder remained, indicating that it is dynamic in nature.

scholarly journals Effect of a Hydrophilic Cationic Surfactant on Cyclopentane Hydrate Crystal Growth at the Water/Cyclopentane Interface

2017 ◽  
Vol 17 (10) ◽  
pp. 5098-5107 ◽  
Author(s):  
Henry Delroisse ◽  
Jean-Philippe Torré ◽  
Christophe Dicharry
Keyword(s):  
Crystal Growth ◽  
Cationic Surfactant ◽  
Hydrate Crystal
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