Scalable Manufacturing of High-Entropy Alloy Catalysts for Ammonia Oxidation

Default ARPA-E Project Image

OPEN 2021
Rockville, Maryland
Project Term:
07/01/2022 - 06/30/2025

Technology Description:

HighT-Tech aims to develop advanced high-entropy alloy (HEA) catalysts for ammonia oxidation with enhanced catalytic activity, selectivity, and stability. HighT-Tech’s technical approach includes scalable high-temperature thermal shock manufacturing of uniformly mixed multi-metallic nanoparticle HEA catalysts, reduced precious metal contents by >50%, reduced operating temperature, enhanced selectivity to desired reaction products, and extended catalyst lifetime. The team will scale up HEA catalyst manufacturing, perform studies mimicking industrial operation conditions to compare catalytic performance, and build prototype reactors to demonstrate the proposed technology’s techno-economic advantages.

Potential Impact:

The proposed project will enable a new catalyst technology with great commercial potential for the chemical industries.


By reducing the use of scarce precious metals, the proposed process could help to promote sustainability in U.S. energy and chemical industries and manufacturing.


The HEA catalysts can potentially enhance energy efficiency and improve the environmental impact of chemical industries.


The new technology could allow for the scalable manufacturing of HEA catalysts at reduced precious metal content, improved yield, quality and rate of production, and high techno-economic effectiveness.


ARPA-E Program Director:
Dr. Philseok Kim
Project Contact:
Dr. Robert Gatte
Press and General Inquiries Email:
Project Contact Email:

Related Projects

Release Date: