Table 3 Functional group indexes of oil samples based on FTIR analysis result (*MW :Microwave).

From: Assessment of the synthesis method of Fe3O4 nanocatalysts and its effectiveness in viscosity reduction and heavy oil upgrading

 

Crude oil

Crude oil + MW

Crude Oil + MW + Fe3O4 nanocatalysts synthesis by Co-precipitation

Crude Oil + MW + Fe3O4 nanocatalysts synthesis by MW

Aromatic index

0.295

0.286

0.275

0.256

Aliphatic index

0.563

0.655

0.672

0.683

Sulfoxide index

0.018

0.009

0.009

0.002

branched alkane index

0.188

0.201

0.202

0.214

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