Catalysed process of production of hydrogen from silylated derivatives as hydrogen carrier compounds

Method for producing hydrogen comprising the steps consisting in contacting a hydrogen carrier compound (C) comprising one or more Si—H bonds with a hydrogen release catalyst Y and an optional hydrogen release catalyst X wherein the hydrogen release catalyst Y is selected from formula

• wherein Y is O or S, and
• X1, X2, are each independently selected from halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, C6-C12 aralkyl, 5 to 10-membered heteroaryl, OR3, SiR6R7R8, wherein said alkyl and aryl groups are optionally substituted by one to three R9 groups
• Or
• X1 and X2=—CRaRb form together with the carbon atom to which they are attached a 3 to 10-membered cycloalkyl, optionally substituted by one to three R9 groups and Ra, Rb are each independently selected from H, halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, C6-C12 aralkyl, 5 to 10-membered heteroaryl, OR10, wherein said alkyl and aryl groups are optionally substituted by one to three R9 groups
• Or
• X1 and X2=NRaRb with Ra and Rb, each independently selected from H, halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, C6-C12 aralkyl, 5 to 10-membered heteroaryl, OR10, wherein said alkyl and aryl groups are optionally substituted by one to three R9 groups
• Or
• X1 is selected from halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, C6-C12 aralkyl, 5 to 10-membered heteroaryl, OR3, SiR6R7R8 and X2=NRaRb with Ra and Rb, each independently selected from H, halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, C6-C12 aralkyl, 5 to 10-membered heteroaryl, OR10, wherein said alkyl and aryl groups are optionally substituted by one to three R9 groups
• Or
• X1 and X2=NRc form together with the carbon atom to which they are attached a 3 to 10-membered heterocycloalkyl, optionally substituted by one to three R9 groups and Rc is selected from H, halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, C6-C12 aralkyl, 5 to 10-membered heteroaryl, OR10, wherein said alkyl and aryl groups are optionally substituted by one to three R9 groups
• Or
• X1=—CRaRb with Ra, Rb are each independently selected from H, halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, C6-C12 aralkyl, 5 to 10-membered heteroaryl, OR10 and X2=NRc form together with the carbon atom to which they are attached a 3 to 10-membered heterocycloalkyl, optionally substituted by one to three R9 groups with Rc selected from H, halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, aralkyl, 5 to 10-membered heteroaryl, OR10, wherein said alkyl and aryl groups are optionally substituted by one to three R9 groups
• wherein
• R3 is H, C1-C6 alkyl, C6-C10 aryl, C6-C12 aralkyl;
• R6, R7, R8 are each independently selected from H, OR3, C1-C6 alkyl, C6-C10 aryl, C6-C12 aralkyl;
• R9 is selected from halogen, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C12 aryl, C6-C12 aralkyl, 5 to 10-membered heteroaryl, OR10, NO2, NR11R12, CN, C(═O)R10, C(═O)OR10, S(═O)CH3, wherein said alkyl and aryl groups are optionally substituted by one or more halogen or C1-C10 alkyl or OR3;
• R10 is H, C1-C6 alkyl, C6-C10 aryl, C6-C12 aralkyl;
• and
• R11, R12 are each independently selected from H, or C1-C10 alkyl, and
• wherein the ratio between the sum of the moles of hydrogen release catalyst Y and the moles of the optional hydrogen release catalyst X relative to the moles of the hydrogen carrier compound (C) multiplied by the number of [Si—H] bonds of compound (C) is inferior or equal to 0.3, and/or wherein the ratio between the sum of the mass of hydrogen release catalyst Y and the mass of the optional hydrogen release catalyst X relative to the mass of the hydrogen carrier compound (C) is inferior or equal to 0.2.