Page 261 - Principles of Catalyst Development

252 APPENDIX 5
1.2.2. Alicyclics

C,H gCH 3 = C 6 HI2
1.2.3. Aromatics
C6H,C2HS = C 6 H 4(CH Jh (mono- to disubstituted)
C 6 HsC 4 H g = C 6 HsCH2 CH(CH 3h (side-chain
rearrangement)

2. Combination Reactions
2.1. Hydrogen transfer. Rupture of a C-H bond and transfer of the
hydrogen atom to another molecule.
2.1.1. Aliphatics

2C 4 H 8 = C 4H 6 + C 4 H IO
2.1.2. Alicyclics
2CoHg = CoHIO + C 6 Ho
2.2. Disproportionation. Removal of a group and transfer to another
molecule.
2.2.1. Inorganic

2CO'"' C + CO2 (Bouduard reaction)
2.2.2. Aliphatics
2C1H 7CH, = C 1H 8 + C,HI2

2.2.3. Aromatics
2CoHsCH1 = CoHo + C 6H4(CH 3 )2
2.3. Polymerization. Formation of long chain molecule, M n , from n M
monomers.
2.3.1. Aliphatics

Alkene: nC 3H6 = polypropylene
Alkadiene:
nC4H4 = rubberlike polymers
2.3.2. Aromatics

nC 6 HsCH=CH 2 = polystyrene
2.3.3. Mixed
two monomer species = copolymer