Evaluation of amine-incorporated porous polymer networks (aPPNs) as sorbents for post­combustion CO₂ capture

Technical Report · Tue Apr 30 00:00:00 EDT 2019

DOI:https://doi.org/10.2172/1525327· OSTI ID:1525327

Zhou, Hong-Cai Joe  ^[1]; Day, Gregory Steven ^[1]; Ozdemir, Koray ^[1]

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1. Texas A & M University, College Station, TX (United States)

This is the final report for the TAMU project “Evaluation of amine-incorporated porous polymer networks (aPPNs) as sorbents for post­combustion CO₂ capture.” During this project, a team consisting of the Zhou group at Texas A&M University and framergy Inc. were tasked with developing a porous polymer network (PPN) based sorbent system for CO₂ capture applications. The three year project was divided up into 3 individual budget periods. During budget period 1 the team develop multiple novel PPN based sorbents and began initial CO₂ capture experiments. During the course of this research the team determined that two sorbents were the standout targets, PPN-150-DETA and PPN-151-DETA. During budget period 2 the team further developed these two materials, gathering data to determine their performance under both wet and dry conditions, determine their CO₂ adsorption capacities, heats of adsorption, regenerative energy demands, and mechanical attrition. In addition, budget period 2 saw the development of 50 g and 250 g batches of both sorbents, while still maintaining >0.10 g/g uptake capacity under wet gas conditions. Following budget period 2 testing, the team opted to continue on with PPN-151-DETA due to its superior CO₂ cycling capabilities, with a consistent uptake capacity observed over 30 cycles at the lab scale. During budget period 3 the team further developed the material at scale, producing a 1 kg batch of material. Following this, the team performed multiple long-term cycling tests in the presence and absence of SO₂ using a 100 mL column. During this testing the team observed that the material loses significant uptake capacity due to SO₂, as well as shows some level of DETA loss, which resulted in instrument breakdown and a request for a no-cost extension. The team was able to finalize the experiment with a test using a 1.5 L column in the absence of SO₂, with the final cycle uptakes being around 0.035 g/g due to the need to harshly activate the material to prevent DETA desorption.

• Research Organization: Texas A & M Univ., College Station, TX (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• Contributing Organization: Vapor Point LLC
• DOE Contract Number: FE0026472
• OSTI ID: 1525327
• Report Number(s): DOE-TAMU-0026472
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
carbon capture
porous polymer networks
post-combustion