Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1993-08-23
1995-01-17
Gorgos, Kathryn
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204 59R, 204129, C25B 100
Patent
active
053823320
ABSTRACT:
An electrocatalyst for use in electrolytic reduction of carbon dioxide gas in an aqueous solution. The electrocatalyst is formed of nickel alkyl cyclam which is expressed by the general formula: ##STR1## where each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is selected from the group consisting of hydrogen atom and aliphatic saturated hydrocarbon group expressed by the formula of C.sub.n H.sub.2n+1 ; wherein at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is the aliphatic saturated hydrocarbon group in which n is a number ranging from 1 to 22. The nickel alkyl cyclam as the electrocatalyst is excellent in stability and energy consumption improving effect while exhibiting a high carbon dioxide gas reduction effect, as compared with conventional nickel cyclam.
REFERENCES:
Marc Beley et al., "Electrocatalytic Reduction of CO.sub.2 by Ni Cyclam.sup.2+ in Water: Study of the Factors Affecting the Efficiency and the Selectivity of the Process," J. Am. Chem. Soc. 1986, 108, pp. 7461-7467.
Iwao Tabushi et al., "Preparation of C-Alkylated Macrocyclic Polyamines," Tetrahedron Letters No. 12, 1977, pp. 1049-1052.
Mario Ciampolini et al., "Steric Effects on the Solution Chemistry of Nickel(II) Complexes with N-Monomethylated 14-Membered Tetraaza Macrocyles. The Blue-to-Yellow Conversion and the Oxidation and Reduction Behavior," Inorg. Chem., 1986, 25, pp. 4131-4135.
Mario Ciampolini et al., "Dinickel and Dicopper Complexes with N,N-Linked Bis(cyclam) Ligands. An Ideal System for the Investigation of Electrostatic Effects on the Redox Behavior of Pairs of Metal Ions," Inorg. Chem., 1987, 26, pp. 3527-3533.
Wagner et al., "Preparation of Macrocyclic Tertiary Amine Complexes of Nicek (11) by Alkylation of Coordiated Amine, Crystal Structure of a Monoazide Bridged Dimer of Ni(N-tetramethylcyclam).sup.2+, " J. Am. Chem. Soc. (USA), vol. 96, No. 8, Apr. 1974, pp. 2625-2627.
Masamichi Fujihira et al., "Electrocatalytic reduction of CO.sub.2 by nickel(II) cyclam. Study of the reduction mechanism on mercury by cyclic voltammetry, polarography and electrocapillarity," J. Electroanal. Chem., 292, 1990, pp. 199-215.
Akiba Uichi
Fujihira Masamichi
Hirata Yoshiki
Suga Kosaku
Fujihira Masamichi
Gorgos Kathryn
Nissan Motor Co,. Ltd.
LandOfFree
Method for electrolytic reduction of carbon dioxide gas using an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for electrolytic reduction of carbon dioxide gas using an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for electrolytic reduction of carbon dioxide gas using an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-745405