کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
158819 457019 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A single-event microkinetic analysis of the catalytic cracking of (cyclo)alkanes on an equilibrium catalyst in the absence of coke formation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
A single-event microkinetic analysis of the catalytic cracking of (cyclo)alkanes on an equilibrium catalyst in the absence of coke formation
چکیده انگلیسی

Single-event microkinetics (SEMK) are applied to model the catalytic cracking of (cyclo)alkanes on an equilibrium catalyst in the absence of coke formation. Model kinetic parameters are estimated via regression of cracking data obtained at temperatures relevant for industrial practice, 693–753 K. The obtained parameter values allow quantifying the main reaction pathways. Hydride transfer and protonation favor the formation of more stable, tertiary carbenium ions. ββ-scission of (cyclo)alkylcarbenium ions is preceded by skeletal isomerization and ring contraction. Small side chain cycloalkanes crack via ring-opening followed by ββ-scission, while the cracking of long side chain cycloalkanes occurs via dealkylation and only to a lesser extent via ring-opening. Temperature effects, such as the increase of the alkene to alkane ratio with temperature, are adequately simulated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 62, Issues 18–20, September–October 2007, Pages 5033–5038
نویسندگان
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