Thermal Decomposition of Jet Fuel Model Compounds under Near-Critical and Supercritical Conditions. 2. Decalin and Tetralin

Abstract

Thermal decomposition of two jet fuel model compounds, Decalin and Tetralin, was studied under near-critical and supercritical conditions. Under high-pressure supercritical conditions, the thermal decomposition of both compounds was dominated by isomerization reactions. This is different from the results obtained under low-pressure and high-temperature conditions where cracking reactions (for Decalin) or dehydrogenation reactions (for Tetralin) dominate. The major liquid products from Decalin were spiro[4,5]decane, 1-butylcyclohexene, 1-methylcyclohexene, 1-methylhydrindan, two octalins, and toluene. The cis-decalin was converted to trans-decalin as the reaction proceeded. The main liquid products from Tetralin were 1-methylindan and naphthalene with the former being the dominant product that was favored at high pressures.

Retardation of oil cracking to gas and pressure induced combination reactions to account for viscous oil in deep petroleum basins: Evidence from oil and n-hexadecane pyrolysis at water pressures up to 900 bar

“…The cracking of aromatic compounds has been investigated (Savage and Klein, 1987;Freund and Olsmtead, 1989;Poutsma, 1990;Smith and Savage, 1991;Burnham et al, 1998;Yu and Eser, 1998;Behar et al, 1999;Bounaceur et al, 2000;Burklé-Vitzthum et al, 2003;2004;Dartiguelongue et al, 2006;Leininger et al, 2006). The thermal stability of alkylaromatics depends on the number of aromatic rings and length of the side chain (Smith and Savage, 1991;Behar et al, 2002).…”

Development of Dehydrogenation Catalyst for Reversible Hydrogen Storage in Organic Hydrides

“…十氢化萘分子 中, 次甲基 C-H 键最容易断裂, 顺式十氢化萘 9,10 位 的两个氢和催化剂表面形成直立 σ 键吸附, 然后断裂形 成 9,10-八氢化萘. 反式十氢化萘由于 9,10 位两个氢不 在同一平面, 只脱掉其中的一个氢和共平面的一个亚甲 基氢, 最后形成 1,9-八氢化萘, 过程中 9,10-八氢化萘会 异构化为 1,9-八氢化萘 [11] , 八氢化萘继续脱氢形成四氢 化萘. 四氢化萘在催化剂 Ni/Al 2 O 3 表面存在三种不同的 吸附方式, 吸附平衡时是以 π 键和 σ 键的方式吸附, 过 渡态时为 π/σ 复合吸附方式.…”

Autoignition study of tetralin in a rapid compression machine at elevated pressures and low-to-intermediate temperatures

“…In addition to the oxidation studies, the pyrolysis of tetralin has been studied by several researchers [5][6][7][8][9]. Tsang and Cui [5] studied pyrolysis of tetralin in a shock tube in the temperature range of 1000-1400 K by measuring concentrations of products formed due to unimolecular decomposition and hydrogen atom induced decomposition.…”