Academy Offer

Extended to August 15

Claim a 20% discount on all eLearning and virtual courses purchases with code EDU20OFF.

This promotion does not apply to the credential programs.

Simultaneous Activation of CH4 and N2 in a Microwave Enhanced Plasma-Catalytic Hybrid Reactor

  • Checkout

    Checkout

    Do you already own this?

    Pricing


    Individuals

    AIChE Member Credits 0.5
    AIChE Members $19.00
    AIChE Graduate Student Members Free
    AIChE Undergraduate Student Members Free
    Non-Members $29.00
  • Type:
    Conference Presentation
  • Conference Type:
    AIChE Annual Meeting
  • Presentation Date:
    November 9, 2021
  • Duration:
    18 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

Share This Post:

Plasma afterglows are widely studied in applications such as nitriding, nitrocarburizing, detoxification of gases, simulating planetary atmospheres and chemical processing. The direct ignition of CH4 gas within the waveguide region, to plasma state requires high pressure or vacuum conditions leading to a very high carbon soot formation, which can only be controlled by co-feeding H2. Additionally, the power requirement can be as high as 800 W at atmospheric pressure. In this work, a stable and continuous MW enhanced Argon (Ar) plasma was generated at atmospheric pressure and power at 550 W. The plasma afterglow region was utilized to active CH4 and N2. The activation of the reactive gases in the afterglow region offered several advantages:

  • The region is usually cold at atmospheric pressure leading to methane activation without excessive coking.
  • The feed gas (Ar) used to generate plasma can be continuously exposed to the waveguide leading to a stable plasma generation.
  • The reactive species do not alter the power requirements, which is usually the case when the reaction occur in the waveguide region.
  • The coolant flow rate can be fixed for the same reason.

The conversion of CH4 in the plasma afterglow region was reported to be 20% with C2H2 (0.5% by volume) and H2 (1.8% by volume) as major products and negligible carbon soot deposit. Cs promoted RuO2 supported on Ceria was then placed within the plasma afterglow region and heated thermally to 180 0C. A steady production of 20 ppm of NH3 was observed while C2H2 was selectively hydrogenated to C2H4 (0.01% by volume).

In conclusion, this plasma-catalytic system successfully demonstrated the direct conversion of Methane and Nitrogen to Ammonia and Ethylene. This new hybrid method increase the scope of direct and non-oxidative methane conversion, paving out new ways for stranded natural gas utilization.

Presenter(s): 
Once the content has been viewed and you have attested to it, you will be able to download and print a certificate for PDH credits. If you have already viewed this content, please click here to login.

Checkout

Checkout

Do you already own this?

Pricing


Individuals

AIChE Member Credits 0.5
AIChE Members $19.00
AIChE Graduate Student Members Free
AIChE Undergraduate Student Members Free
Non-Members $29.00
Language: