Page 260 - Principles of Catalyst Development

APPENDIX 5

Classification of Reactions

1. Single-Molecule Reactions
1.1. Cracking. Rupture of a C-C bond, normally of larger compounds,
to give smaller, less saturated compounds.
1.1.1. Aliphatics
( dealkylation)
Alkane: C6H14 = C 2H4 + C4H lO
Alkene: C4HS = 2C 2H4 ( depolymerization)
1.1.2. Alicyclics
C3HS = CH)CHCH2 ( dealkylation)
1.1.3. Aromatics
C6H6C)H7 = C)H6 + C6H6 ( dealkylation)
1.2. Isomerization. The intramolecular rearrangement of structure.
1.2.1. Aliphatics

Alkane: C 4 H lO = (CH3hCHCH3
Alkene:
CH3 CH2 CH=CH2 = CH)CH=CHCH 3
(shift of double bond)
CH 3CH 2CH=CHCH 3 = CH 3CH 2CH=CHCH 3
(cis-trans shift)
CH 3CH 2H=CH 2 = (CH 3hC=CH2 (tertiary C atoms)
(CH 3 hC-CH=CH 2 = (CH3)2CH-C(CH3)=CH2
(tertiary C atom position)
2S1