Table 1 Recent research related to using low-cost catalysts for catalytic pyrolysis of polypropylene.

Polypropylene (PP)

Alumina

- Concluded that using a 10% catalyst at pyrolysis temperature 465 °C produced 25 g of oil from catalytic pyrolysis of polypropylene

- Using 25% of catalyst might be produce higher grade fuel for running automobile engines

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Polypropylene (PP)

Kaolin

- The highest yield was produced with a catalyst-to-plastic ratio of 1:3, with a yield of 79.85 wt%

- The liquid product comprises of hydrocarbons with various functional groups

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Polypropylene (PP) and high-density polyethylene (HDPE)

Natural zeolite

- PP can be catalytically transformed to create liquid oil with a yield of up to 69.69 wt%

- In the case of PP, the catalytically generated liquids hydrocarbons were C₅–C₁₂ (74.16%), C₁₃–C₁₆ (3.52%), and C₁₇–C₂₀ (22.32%)

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Polypropylene (PP), and low-density polyethylene (LDPE)

N-clay

- The highest yield was 70.34 wt%

- The oils derived from pyrolysis of PP and LDPE component like gasoline/kerosene

⁴³