More Like this

1. The Prototypical Transition Metal Carbenes, (CO) ₅ Cr=CH ₂ , (CO) ₄ Fe=CH ₂ , (CO) ₃ Ni=CH ₂ , (CO) ₅ Mo=CH ₂ , (CO) ₄ Ru=CH ₂ , (CO) ₃ Pd=CH ₂ , (CO) ₅ W=CH ₂ , (CO) ₄ Os=CH ₂ , and (CO) ₃ Pt=CH ₂ : Challenge to Experiment

   https://doi.org/10.1021/acs.jpca.8b05394  

   Weidman, Jared D.; Estep, Marissa L.; Schaefer, Henry F. (July 2018, The Journal of Physical Chemistry A)
2. Effect of “X” Ligands on the Photocatalytic Reduction of CO ₂ to CO with Re(pyridylNHC-CF ₃ )(CO) ₃ X Complexes: Effect of “X” Ligands on the Photocatalytic Reduction of CO ₂ to CO with Re(pyridylNHC-CF ₃ )(CO) ₃ X Complexes

   https://doi.org/10.1002/ejic.202000283  

   Shirley, Hunter; Sexton, Thomas More; Liyanage, Nalaka P.; Palmer, C. Zachary; McNamara, Louis E.; Hammer, Nathan I.; Tschumper, Gregory S.; Delcamp, Jared H. (May 2020, European Journal of Inorganic Chemistry)
3. Kinetic Drawbacks of Combining Electrochemical CO ₂ Sorbent Reactivation with CO ₂ Absorption

   https://doi.org/10.1021/acs.iecr.3c02204  

   Boualavong, Jonathan; Gorski, Christopher A (November 2023, Industrial & Engineering Chemistry Research)

   Electrochemical CO2 capture approaches, where electrochemical reactions control the sorbent’s CO2 affinity to drive subsequent CO2 absorption/desorption, have gained substantial attention due to their low energy demands compared to temperature-swing approaches. Typically, the process uses separate electrochemical and mass-transfer steps, producing a 4-stage (cathodic/anodic, absorption/desorption) process, but recent work proposed that these energy demands can be further reduced by combining the electrochemical and CO2 mass-transfer reactor units. Here, we used computational models to examine the practical benefit of combining electrochemical sorbent reactivation with CO2 absorption due to this combination’s implicit assumptions about the process rate and therefore, the reactor size and cost. Comparing the minimum energy demand and process time of this combined reactor to those of the separated configuration, we found that the combined absorber can reduce the energy demand by up to 67% but doing so can also increase the process time by several orders of magnitude. In contrast, optimizing the solution chemistry could benefit both the energy demand and process time simultaneously. 

   more » « less
4. H and CO Co-Induced Roughening of Cu Surface in CO ₂ Electroreduction Conditions

   https://doi.org/10.1021/jacs.4c03515  

   Zhang, Zisheng; Gee, Winston; Sautet, Philippe; Alexandrova, Anastassia N (June 2024, Journal of the American Chemical Society)
5. Heterogeneous Nature of Electrocatalytic CO/CO ₂ Reduction by Cobalt Phthalocyanines

   https://doi.org/10.1002/cssc.202001396  

   Wu, Yueshen; Hu, Gongfang; Rooney, Conor_L; Brudvig, Gary_W; Wang, Hailiang (July 2020, ChemSusChem)

   Abstract Molecular catalysts for electrochemical CO₂reduction have traditionally been studied in their dissolved states. However, the heterogenization of molecular catalysts has the potential to deliver much higher reaction rates and enable the reduction of CO₂by more than two electrons. In light of the recently discovered reactivity of heterogenized cobalt phthalocyanine molecules to catalyze CO₂reduction into methanol, direct comparison is needed to uncover the distinct catalytic activity and selectivity in homogeneous catalysis versus heterogeneous catalysis. Herein, soluble cobalt phthalocyanine derivatives were synthesized, and their catalytic activities in the homogeneous solutions were evaluated. The results show that the observed catalytic activities for both CO₂‐to‐CO and CO‐to‐methanol conversions in aqueous solutions of the cobalt phthalocyanines are predominantly heterogeneous in nature through the adsorbed species on the electrode. 

   more » « less