Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Institute Francais Du Petrole

François Ropital

Pascal Raybaud

Xavier Longaygue

Philippe Dascotte

Sébastien Duval

Hervé Toulhoat

Philipe Lecour

A process for sequestrating carbon emitted into the atmosphere in the form of COcomprises:

Process for sequestrating carbon in the form of a mineral in which the carbon has oxidation number +3

A process for the reversible storage of hydrogen, comprising bringing an alloy of alkaline metal and silicon into contact with gaseous hydrogen leading to the formation of the hydride or corresponding hydrides, comprises the use of at least one balanced system that corresponds

Process for the storage of hydrogen using a system that strikes a balance between an alloy of alkaline metal and silicon and the corresponding hydride

A process for the reversible storage of hydrogen, comprising bringing into contact a material that consists of magnesium elements and nitrogen elements with gaseous hydrogen leading to the formation of an amide or corresponding hydrides, comprises the use of a balanced system corresponding to the formula:MgNMg(NH)+2MgHwhere n is the number of hydrogen atoms corresponding to the stoichiometry of the hydride or hydrides formed. The material can also comprise, in a minor proportion, at least one transition metal of groups 3 to 12 of the periodic table that is selected from among Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Pd.

Process for the storage of hydrogen using a system that strikes a balance between a material that consists of magnesium elements and magnesium nitrogen elements and nitrogen and the corresponding hydride

A process for the reversible storage of hydrogen, comprising bringing into contact an alloy of magnesium and palladium with the gaseous hydrogen leading to the formation of hydride or corresponding hydrides, comprises the use of a balanced system corresponding

Process for the storage of hydrogen using a system that strikes a balance between an alloy of magnesium and palladium and the corresponding hydride

The use is described, in the fabrication of apparatus and equipment used in refining and in petrochemicals (for example furnace, reactor or line elements), of a steel composition comprising: Steels comprising:

Method of using low alloy anticoking steels with an increased silicon and manganese content in refining and petrochemicals applications

The present invention relates to a device comprising a thermobalance equipped with a detector () for measuring acoustic signals emitted by a sample () hanging from the balance beam and a preamplifier () incorporated in the vicinity of the head of the balance. The invention allows gas phase kinetic study of the degradation of materials and of depositions on these materials under temperature (100 to 1400&#xb0; C.). In particular, corrosion phenomena such as: oxidation, sulfurization, carbonizing, metal dusting, nitriding, hydridation, chlorination, molten salt attack, and combinations of these degradations. Besides, deposits on the materials can be due to coking phenomena (carbon deposits), deposition of molten salts, volatile compounds condensation. The invention allows evaluation of the efficiency of inhibitors against corrosion and deposition processes.

Device for coupling thermogravimetric analyses and acoustic emission measurements

In order to produce elements for furnaces, reactors or conduits on the walls of which coke can appear, steels are used with a composition which is adapted to resist coking comprising, by weight, at most 0.25% of C, 1.5% to 5% of Si, 4% to 10% of Cr, 0.5% to 2% of Mo, 0.3% to 1% of Mn, at most 0.030% of S and at most 0.03% of P, the complement to 100% being essentially iron. Novel steel compositions for use in these applications are those which comprise, by weight, at most 0.25% of C, more than 2.5% and up to 5% of Si, 4% to 10% of Cr, 0.5% to 2% of Mo, 0.3% to 1% of Mn, at most 0.03% of S and at most 0.03% of P, the complement to 100% being essentially iron.

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Rueil Malmaison, France

François Ropital