Eco-friendly upconversion of limestone into value-added calcium formate

Article abstract of DOI:10.1039/d0gc01089h

Although CaCO3 is a naturally available, inexpensive, abundant and extensively used chemical in various industries, to date, most of its conversions liberate CO2 into the atmosphere, which accounts for about 5-6% of global anthropogenic CO2 emission. Herein, the first synthesis of calcium formate (CF) by hydrogenation of an aqueous mixture of CaCO3 and CO2 using a heterogeneous catalyst in an unconventional CO2 reducing manner is reported. The phosphine-based heterogenized Ru catalyst efficiently converts CaCO3 into CF with good selectivity (>99%) and is readily separated from the reaction product, resulting in promising recycling ability. Thus, this work provides a promising strategy for the design of green and sustainable conversion of carbonate minerals in industry.

Full text of DOI:10.1039/d0gc01089h

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Green
Chemistry
Cutting-edge research for a greener sustainable future
Accepted Manuscript
This article can be cited before page numbers have been issued, to do this please use: G. H. Gunasekar,
H. Park, S. Padmanaban and S. Yoon, Green Chem., 2020, DOI: 10.1039/D0GC01089H.
Volume 20
Number
May 2018
Pages 1919-2160
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Royal Society of Chemistry peer review process and has been
accepted for publication.
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Paul T. Anastas et al.
The Green ChemisTREE: 20 years after taking root with the 12
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DOI: 10.1039/D0GC01089H

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Page 4 of 7
View Article Online
DOI: 10.1039/D0GC01089H
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DOI: 10.1039/D0GC01089H
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Page 6 of 7
View Article Online
DOI: 10.1039/D0GC01089H
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Page 7 of 7
Green Chemistry
View Article Online
DOI: 10.1039/D0GC01089H