Innovative NOx Decomposition Technology

Request Number REQ6367707
Due Date March 5, 2018
Request for Proposal Details
RFP Title
Innovative NOx Decomposition Technology
RFP Description

NineSigma, representing a major Japanese energy company, seeks innovative technologies to reduce nitrogen oxides (NOx) in combustion exhaust gas to nitrogen. Specifically, the client seeks one of the following technologies: (1) NOx reduction with methane at 500°C or lower, OR (2) NOx decomposition without using a reducing agent at 200°C or lower


Efforts on emission controls of nitrogen oxides (NOx) are carried out owing to its harmfulness to the human body and atmosphere, and greenhouse effects. Generally, an exhaust gas denitration techniques such as a selective catalytic reduction (SCR) using urea or ammonia is used for NOx removal. For further improvement of the efficiency of such emission control technologies, our client has developed NOx removal technology with methane, an easily available gas, or without using any reducing agents, both of which still need further development.


Meanwhile, various organizations around the world are developing excellent NOx decomposition technologies using selective catalytic reduction (SCR), catalytic cracking, plasma and so on. Therefore, the client has issued this open request to further accelerate its environmental measures through collaboration with partners who have such promising technologies.


Key Success Criteria

Details of required technology

We are seeking a technology to reduce NOx concentration of 100 to 600 ppm before treatment to 30 ppm or less.

(1) For NOx reduction with methane

  • NOx in combustion exhaust gas at 500°C or lower shall be reduced to nitrogen.
  • Concentration of methane added as a reducing agent in the exhaust gas shall be 2000 ppm or less before treatment.
  • For catalytic approaches: the amount of catalyst required for treating exhaust gas at 1 m3/ h shall be 0.03L or less (GHSV: 30,000/h or more).

(2) For NOx decomposition without a reducing agent

  • NOx in combustion exhaust gas at 200°C or lower shall be reduced to nitrogen.
  • For catalytic approaches: the amount of catalyst required for treating exhaust gas at 1 m3/h shall be 0.1 L or less (GHSV: 10,000/h or more).
  • Reducing agents such as urea and ammonia shall not be necessary.

Conditions common to (1) and (2)

  • Durability: shall be stable and usable in the presence of water vapor (10vol%) and sulfur oxides (0.5 ppm) (final target: 15,000 hours or more).
  • A yield of N2O produced from NOx in the original exhaust gas shall be 10% or less.
  • For approaches based on plasma: Electric power required for processing 1 m3/h shall be 10 W or less.


Possible Approaches

Possible approaches might include, but are not limited to:

  • Selective catalytic reduction with CH4
  • NOx decompositions using plasma
  • Electrochemical decompositions

Anticipated Project Phases or Project Plan

Respondents should submit proposals using the attached Response Template.

The client will review submitted proposals and possibly ask clarifying questions before selecting the most suitable candidate(s) for collaboration. The client will select the best candidate(s) through evaluations. During the selection process, the client may execute non-disclosure agreements (NDA) with selected respondent(s), seek further information disclosure, and discuss specific development targets or potential opportunities. The client will execute necessary agreement(s) with the selected respondent(s) and move to the advanced development phase. Specifics of any collaboration will be determined through consultation with the concerned parties.


Approaches not of interest

The following approaches are not of interest:

  • Wet processing of exhaust gas(scrubber etc.)
  • Simple adsorption
  • Technologies applicable only to exhaust gas under limited combustion conditions (threeway catalyst, etc.)


Preferred Collaboration types
Items to be submitted

Responses will use the Proposal Template which is available here and include the following items:

  • Overview of the technology
  • Principle of the technology
  • Uniqueness of the technology
  • Development stage
  • Data on NOx decomposition performance
    • NOx concentration before treatment
    • NOx concentration after treatment
    • Reduction rate of NOx to nitrogen
    • N2O concentration after treatment
    • Temperature
    • Other test conditions (concentration of CH4, O2 and other coexisting gas, amount of catalyst, plasma power etc.)
  • Data on the durability
  • Challenges and development plan for practical use
  • Past achievements (additional information that can certify R & D capabilities including research papers, patents, etc.)
  • Organization overview


Area of Interest
Request Priority