Method of forming an organosilicon product using a membrane contactor to react a gas and liquid

1. A method of forming an organosilicon product, the method comprising:

contacting a first side of a membrane with a nonvolatile liquid reactant; and

contacting a second side of the membrane with a gaseous reactant, wherein the contacting is sufficient to react the gaseous reactant with the liquid reactant to form an organosilicon product on the first side of the membrane, wherein the membrane is substantially impermeable to the liquid reactant and substantially permeable to the gaseous reactant,

wherein the liquid reactant comprises a compound having at least one silicon-bonded hydrogen atom, and the gaseous reactant comprises a compound having at least one carbon-carbon multiple bond or wherein the liquid reactant comprises a compound having at least one carbon-carbon multiple bond, and the gaseous reactant comprises a compound having at least one silicon-bonded hydrogen atom; and

wherein the organosilicon produced is a polysiloxane or an organosilane comprising a monosilane, disilane, trisilane, or polysilane.

2. The method of claim 1 , wherein the membrane is a silicone membrane.

3. The method of claim 1 , wherein the membrane is nonporous.

4. The method of claim 3 , wherein the membrane is a dense membrane.

5. The method of claim 1 , wherein the membrane has a thickness of from 1 to 300 μm.

6. The method of claim 1 , wherein the membrane is a free-standing membrane.

7. The method of claim 1 , wherein the membrane is a hollow fiber membrane module comprising a bundle of hollow fibers, wherein the fibers collectively have a bore side and a shell side, wherein the first side of the hollow fiber membrane is the bore side and the second side of the hollow fiber membrane is the shell side, or the first side of the hollow fiber membrane is the shell side and the second side of the hollow fiber membrane is the bore side.

8. The method of claim 1 , wherein the compound having at least one silicon-bonded hydrogen atom is an organopolysiloxane.

9. The method of claim 1 , wherein the compound having at least one silicon-bonded hydrogen atom is a silane or siloxane.

10. The method of claim 1 , wherein the compound having at least one carbon-carbon multiple bond is a polyether.

11. A method of forming an organosilicon product, the method comprising:

contacting a first side of a dense silicone membrane with a nonvolatile liquid reactant comprising a compound having at least one silicon-bonded hydrogen atom and a platinum group catalyst; and

contacting a second side of the membrane with a gaseous reactant comprising a compound having at least one carbon-carbon multiple bond, wherein the contacting is sufficient to react the gaseous reactant with the liquid reactant via a hydrosilylation reaction to form an organosilicon product on the first side of the silicone membrane, wherein the silicone membrane is substantially impermeable to the liquid reactant and substantially permeable to the gaseous reactant.

12. A method of forming an organosilicon product, the method comprising:

contacting a first side of a dense silicone membrane with a nonvolatile liquid reactant comprising a compound having at least one carbon-carbon multiple bond and a platinum group catalyst; and

contacting a second side of the membrane with a gaseous reactant comprising a compound having at least one silicon-bonded hydrogen atom, wherein the contacting is sufficient to react the gaseous reactant with the liquid reactant via a hydrosilylation reaction to form an organosilicon product on the first side of the silicone membrane, wherein the silicone membrane is substantially impermeable to the liquid reactant and substantially permeable to the gaseous reactant.

13. The method of claim 1 , wherein the membrane is a dense silicone membrane, the nonvolatile liquid reactant comprises and unsaturated organic compound and a hydrogenation catalyst, the gaseous reactant comprises hydrogen.