Fischer-Tropsch Refining (DE KLERK:FISCHER-TROPSCH O-BK) || Cracking

✍ Scribed by de Klerk, Arno

• Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
• Year: 2011
• Tongue: German
• Weight: 307 KB
• Edition: 1
• Category: Article
• ISBN: 3527326057
• DOI: 10.1002/9783527635603.ch21

✦ Synopsis

Cracking 21.1 21.2 Reaction Chemistry

21.2.1 Thermal Cracking

Thermal cracking relies on high temperature to provide sufficient energy for the rupture of molecular bonds. These cracking reactions occur by homolytic bond dissociation, and the temperature required to break the bonds depends on the bond strength as expressed by the homolytic bond dissociation energies (BDEs) (Table 21.2) [7]. Table 21.2 Homolytic bond dissociation energies (BDEs) of different hydrocarbon bond types at 25 Ž C.

Homolytic bond dissociation reaction a

Bond type BDE (kJ•mol -1 )