TY - GEN
T1 - Theoretical high-yield hydrogen production from starch and water by an in vitro synthetic enzymatic pathway
AU - Zhang, Y. H.Percival
AU - Evans, Barbara R.
AU - Mielenz, Jonathan R.
AU - Hopkins, Robert C.
AU - Adams, Michael W.W.
PY - 2007
Y1 - 2007
N2 - The future hydrogen economy offers a compelling energy vision but there are four main obstacles: hydrogen production, storage, distribution, and fuel cell utilizations as well as safety concern. Hydrogen production from less costly renewable abundant biomass can both decrease reliance on fossil fuels and achieve net greenhouse gas emissions, but current chemical and biological means suffer from low hydrogen yields or/and severe reaction conditions. Here we demonstrated a multiple enzymatic reaction consisting of 13 enzymes and NADPH for producing hydrogen from starch and water as Co6H 10O5 (1) + 7 H2O (1) > 12 H2 (g) + 6 CO2 (g) [PLOS ONE, 2007, 2:e456]. The overall process is spontaneous and unidirectional because of a negative Gibbs free energy. The unique features, such as mild reaction conditions (30°C and atmospheric pressure), high hydrogen yields, likely low production costs ($∼2/kg H2), and a high energy-density carrier starch (14.8 H 2-based mass%), provides perfect opportunities of mobile applications. With technology improvements and integration with fuel cells, this technology also solves the challenges associated with hydrogen storage, distribution, infrastructure, and safety in the hydrogen economy.
AB - The future hydrogen economy offers a compelling energy vision but there are four main obstacles: hydrogen production, storage, distribution, and fuel cell utilizations as well as safety concern. Hydrogen production from less costly renewable abundant biomass can both decrease reliance on fossil fuels and achieve net greenhouse gas emissions, but current chemical and biological means suffer from low hydrogen yields or/and severe reaction conditions. Here we demonstrated a multiple enzymatic reaction consisting of 13 enzymes and NADPH for producing hydrogen from starch and water as Co6H 10O5 (1) + 7 H2O (1) > 12 H2 (g) + 6 CO2 (g) [PLOS ONE, 2007, 2:e456]. The overall process is spontaneous and unidirectional because of a negative Gibbs free energy. The unique features, such as mild reaction conditions (30°C and atmospheric pressure), high hydrogen yields, likely low production costs ($∼2/kg H2), and a high energy-density carrier starch (14.8 H 2-based mass%), provides perfect opportunities of mobile applications. With technology improvements and integration with fuel cells, this technology also solves the challenges associated with hydrogen storage, distribution, infrastructure, and safety in the hydrogen economy.
UR - http://www.scopus.com/inward/record.url?scp=56349167652&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:56349167652
SN - 9780816910229
T3 - AIChE Annual Meeting, Conference Proceedings
BT - 2007 AIChE Annual Meeting
T2 - 2007 AIChE Annual Meeting
Y2 - 4 November 2007 through 9 November 2007
ER -