OK, so what is happening is that you are adding NiO and/or NiO is formed once Ni is added to oxygenated water, which is then hydrated to form Ni(OH)2. This then neutralizes the H2CO3 to form Ni(HCO3)2. You are adding or forming a chemical base to/in the system, not necessarily a catalyst. If it were purely a catalyst the carbon content in the +Ni and -Ni treatments would be identical, only the +Ni treatment would attain max [C(inorg)] faster. This then begs the question why not add cheaper metal oxides e.g., FeO or CaO to do the same thing, the latter explored by Kheshgi (1995)? Then there's the C footprint of reduced metal and/or metal oxide production.... -Greg ________________________________ From: geoengineering@googlegroups.com [geoengineering@googlegroups.com] on behalf of lidijasil...@gmail.com [lidijasil...@gmail.com] Sent: Thursday, February 07, 2013 3:26 PM To: geoengineering@googlegroups.com Cc: lidijasil...@gmail.com Subject: Re: [geo] Re: Nickel nanoparticles catalyse reversible hydration of carbon dioxide for mineralization carbon capture and storage - Catalysis Science & Technology (RSC Publishing)
Yes there is a driving force - we see OH and HCO3 on surface of nickel particles . Due to large surface area of particles the Ni-HCO3 plays large part how much of CO2 in total can be stored in this system. If you need a paper I can send you via my university account- lidia.sil...@ncl.ac.uk<mailto:lidia.sil...@ncl.ac.uk>. Regarding the mineralisation part we are working on this. o<http://o> -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering?hl=en. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
