Cerium(IV) oxide-cerium(III) oxide cycle


Cerium(IV) oxide-cerium(III) oxide cycle
Simplified diagram of the Cerium(IV) oxide-cerium(III) oxide cycle

The cerium(IV) oxide-cerium(III) oxide cycle or CeO2/Ce2O3 cycle is a two step thermochemical process based on cerium(IV) oxide and cerium(III) oxide for hydrogen production.[1] Advantage of the cerium based cycle is the separation of H2 and O2 in two steps which makes high temperature gas separation redundant.

Contents

Process description

The thermochemical two-step water splitting process (thermochemical cycle) uses redox systems:

For the first endothermic step, cerium(IV) oxide is thermally dissociated in an inert gas atmosphere at 2,000 °C (3,630 °F) and 100-200 milli-bar into cerium(III) oxide and oxygen. In the second exothermic step cerium(III) oxide reacts at 400 °C (752 °F) - 600 °C (1,112 °F) in a fixed bed reactor with water and produces hydrogen and cerium(IV) oxide.

See also

References

External links


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Cerium(III) oxide — IUPAC name Cerium(III) oxide …   Wikipedia

  • Cerium(IV) oxide — Cerium(IV) oxide …   Wikipedia

  • Cerium — lanthanum ← cerium → praseodymium ↑ Ce ↓ Th …   Wikipedia

  • Copper-chlorine cycle — Simplified diagram of the Copper Chlorine cycle The copper chlorine cycle (Cu Cl cycle) is a four step thermochemical cycle. It has a maximum temperature requirement of about 530 degrees Celsius.[1] The Cu Cl cycle is one of the prominent… …   Wikipedia

  • Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …   Wikipedia

  • Hydrogen economy — The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[1] Hydrogen advocates promote hydrogen as… …   Wikipedia

  • Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd …   Wikipedia

  • industrial glass — Introduction       solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …   Universalium

  • Fuel cell — For other uses, see Fuel cell (disambiguation). Demonstration model of a direct methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image A fuel cell is a device that converts the chemical energy from a… …   Wikipedia

  • Curium — This article is about the chemical element. For the ancient city located in Cyprus, see Kourion. americium ← curium → berkelium …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.