Metals (e.g., Ni, Pd, Pt, as powders Or on supports) or metal oxides (e.g., Cu, Ni, Pt)

 C= C bond hydrogenation, e.g.,

 olefin + H₂  →  parafin

Metals (e.g., Cu, Ni, Pt)                                          

C= O bond hydrogenation, e.g.,

 acetone+H₂ → isopropanol

Metal (e.g., Pd, Pt)

Complete oxidation of  Hydrocarbons, Oxidation of CO

Fe (supported and promoted with Alkali metals)

3 H₂ + N₂  →  2 NH₃

Ni

CO + 3 H₂   →   CH₄ + H₂O

Fe or Co (supported and promoted With alkali metals)

CO+H₂  →  parafins + olefins +H₂O + CO₂ (+ other oxygen-containing compounds)

Cu (supported on ZnO, with other Components e.g., Ai₂O₃)

CO + 2H₂ → CH₃OH

Re + Pt (supported on a-Al₂O₃ or b-Al₂O₃ promoted with chloride)

Paraffin dehydrogenation,isomerization and
dehydrocyclization

Solid acids (e.g., SiO₂, Al₂O₃, zeolites)

Parafin cracking and isomerization

b-Al₂O₃

Alcohol →  olefin + H₂O

Metal-oxide supported complexes of Cr, Ti or Zr

Olefin polymerization, e.g.,

 ethylene →  polyethylene

Pd supported on acidic zeolite

Paraffin hydrocracking

Metal-oxide supported complexes of W or Re

Olefin metathesis, e.g.,

propylene →  ethylene + butane

Ag (on inert supported, promoted by Alkali metals)

Ethylene + 1/2O₂ →  ethylene Oxide (with CO₂ + H₂O)

V₂O₅ or Pt

 2SO₂ + O₂  →  2 SO₃

( V₂O₅ (on metal oxide support

Naphtalene + 9/2 O2  →  Phthalic anhydride + 2CO2 + 2H₂O

 Bismuth molybdate

Propylene + 1/2 O₂ → acrolein

Mixed oxides of Fe and Mo

CH₃OH + O₂ → formaldehyde
(with CO₂ + H₂O)

 Fe₃O₄ or metal sulfides

H₂O + CO → H₂ + CO₂