National Petrochemical Industrial Company has led the natural gas-to-fuels company's latest round, boosting its overall funding to $150m since 2008.

Siluria Technologies, a US-based company that converts gas to fuels and chemicals, secured $25m on Wednesday in a round led by propylene and polypropylene producer National Petrochemical Industrial Company.

Founded in 2008, Siluria has developed what it claims is the first commercially viable process for converting methane to ethylene, and can also convert ethylene to liquid fuels like gasoline, diesel or jet fuel.

The technology could hypothetically allow natural gas to replace petroleum for use in transportation fuels and commodity…