Catalyst support, recycle reactor and method for releasing hydrogen

Patent metadata

Field	Value
Publication number	US-10618808-B2
Application number	US-201715621734-A
Country	US
Kind code	B2
Filing date	Jun 13, 2017
Priority date	Dec 17, 2014
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A catalyst support may be provided that comprises: an inner core, which includes at least one phase change material; a coating layer around the inner core, which includes at least one metal oxide; a catalytically active layer, which is positioned in interstices of the coating layer and/or lying on the coating layer, wherein at least one catalytically active substance is included in the catalytically active layer; and a supporting layer which is positioned under the coating layer. A recycle reactor may be provided comprising a reservoir for accommodating a chemical hydrogen storage substance; the catalyst support; a screw conveyor for input and transport of the catalyst support; and a heating device with which the catalyst support can be heated. A method for releasing hydrogen from a chemical hydrogen storage substance may be provided.

First claim

The invention claimed is:

1. A catalyst support, comprising:
an inner core, which includes at least one phase change material;
a coating layer around the inner core, which includes at least one metal oxide;
a catalytically active layer, which is positioned in interstices of the coating layer and/or lying on the coating layer, wherein at least one catalytically active substance is included in the catalytically active layer; and
a supporting layer positioned under the coating layer, the supporting layer comprising a metal or an alloy, and the supporting layer encapsulating the at least one phase change material such that a hollow space remains within the supporting layer.

2. The catalyst support as claimed in claim 1 , wherein the phase change material included in the inner core has a phase change temperature of less than about 500° C.

3. The catalyst support as claimed in claim 1 , wherein the inner core further has an electrically conducting inner structure.

4. The catalyst support as claimed in claim 3 , wherein the electrically conducting inner structure includes at least one sponge and/or a mesh and/or particles, which in each case are made of a metal or an alloy.

5. The catalyst support as claimed in claim 1 , wherein the phase change material includes an inorganic salt or a metal alloy.

6. The catalyst support as claimed in claim 1 , wherein the metal oxide included in the coating layer is electrically insulating.

7. The catalyst support as claimed in claim 1 , wherein the catalytically active substance included in the catalytically active layer is a hydrogenation catalyst for a chemical hydrogen storage substance and/or the catalytically active substance included in the catalytically active layer includes a dehydrogenation catalyst for a chemical hydrogen storage substance.

8. The catalyst support as claimed in claim 1 , wherein the catalyst support has a shape of a cylinder, a dumbbell, a ball or an ellipsoid.

9. The catalyst support as claimed in claim 8 , wherein a spherical catalyst support has a diameter between about 1 cm and about 10 cm.

10. The catalyst support as claimed in claim 1 , wherein the supporting layer includes a steel alloy.

11. The catalyst support as claimed in claim 1 , wherein the coating layer has a thickness of about 10 μm to about 5 mm.

12. The catalyst support as claimed in claim 1 , wherein the catalytically active layer is made as a partial coating.

13. The catalyst support as claimed in claim 1 , wherein the coating layer covers between about 5% and about 25% of the surface of the catalyst support.

14. The catalyst support as claimed in claim 1 , wherein the coating layer includes aluminum oxide and/or silicon oxide and/or titanium oxide.

15. The catalyst support as claimed in claim 1 , wherein the surface is calcined.

16. The catalyst support as claimed in claim 1 , wherein the supporting layer comprises a shell consisting of steel.

17. The catalyst support as claimed in claim 1 , wherein the supporting layer is a rigid steel ball.

18. A recycle reactor, comprising:
a reservoir for accommodating a chemical hydrogen storage substance;
a catalyst support;
a screw conveyor for input and transport of the catalyst support; and
a heating device with which the catalyst support can be heated, wherein the catalyst support comprises:
an inner core, which includes at least one phase change material;
a coating layer around the inner core, which includes at least one metal oxide;
a catalytically active layer, which is positioned in interstices of the coating layer and/or lying on the coating layer, wherein at least one catalytically active substance is included in the catalytically active layer; and
a supporting layer positioned under the coating layer, the supporting layer comprising a metal or an alloy, and the supporting layer encapsulating the at least one phase change material such that a hollow space remains within the supporting layer.

19. The recycle reactor as claimed in claim 18 , wherein the heating device comprises an inductive heating system.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Hornung Andreas
• Binder Samir

Classifications

• B01J8/386

  internally, i.e. the particles rotate within the vessel · CPC title

• Y02P20/584

  Recycling of catalysts · CPC title

• C01B2203/085

  by electric heating · CPC title

• B01J37/0081

  Preparation by melting · CPC title

• B01J8/20 Primary

  with liquid as a fluidising medium · CPC title