Catalytic Methane to Ethylene Conversion over Mixed Oxide-Sulfide Catalysts using S2

NU 2014-181

INVENTORS

  • Tobin Marks*
  • Matthias Peter

SHORT DESCRIPTION

This innovation leverages transition metal oxides that partially convert to sulfides with S2 to efficiently convert methane into ethylene. It targets industrial chemical production by reducing cost and enhancing selectivity.

BACKGROUND

Current industrial methods for producing ethylene from methane rely on expensive noble metals and suffer from low conversion and selectivity. These limitations cause high production costs and hinder scalability. The market needs a process that lowers operating costs while achieving higher conversion rates.

ABSTRACT

The invention employs transition metal oxides that partially transform into sulfides under the influence of S2. Operating at high catalyst loadings with elevated gas flow rates, the system prioritizes enhanced ethylene selectivity. The approach eliminates the need for noble metals, thereby reducing catalyst costs while yielding improved conversion performance in a laboratory reactor setting.

MARKET OPPORTUNITY

The primary target market is the global ethylene market, which was valued at $182.6 billion in 2023 and is projected to reach $320.9 billion by 2033 (Source: Market.us, 2024). This market is dominated by steam cracking, an energy-intensive process reliant on feedstocks like naphtha. The key market driver is the "shale gas revolution," which has created a massive supply of low-cost methane, driving intense demand for a direct methane-to-ethylene conversion process (Source: MDPI, 2022). This technology directly addresses the critical need for a cost-effective alternative to noble-metal catalysts, overcoming the low conversion and selectivity issues that have made current methane-based methods commercially unviable.

DEVELOPMENT STAGE

TRL-4 – Prototype Validated in Lab: The key functions have been demonstrated using a laboratory-scale reactor that confirms improved methane conversion efficiency.

APPLICATIONS

  • Industrial production of ethylene: Converts methane into ethylene for chemical manufacturing.

ADVANTAGES

  • Reduces catalyst cost: Eliminates the need for expensive noble metals.
  • Enhances selectivity: Achieves higher C2H4 production compared to previous methods using O2 or noble metal catalysts.

PUBLICATIONS

IP STATUS

Issued US Patent 10,227,268 (View Patent)

Patent Information: