Dynamic resonance of heterogeneous catalysis

Patent metadata

Field	Value
Publication number	US-2022127153-A1
Application number	US-202017434576-A
Country	US
Kind code	A1
Filing date	Feb 28, 2020
Priority date	Feb 28, 2019
Publication date	Apr 28, 2022
Grant date	—

Abstract

A heterogeneous catalysis method for catalyzing the conversion of a first chemical species to a second chemical species includes varying a binding energy of the first chemical species, the second chemical species, or both over time and in the presence of a catalyst. Systems configured to catalyze the conversion of the first chemical species to the second chemical species by varying a binding energy of the first chemical species, the second chemical species, or both over time and in the presence of a catalyst include a sound wave generator, a pressure generator, a piezoelectric material, or a back gate device configured to facilitate the varying of the binding energy of the first chemical species, the second chemical species, or both.

First claim

1 - 30 . (canceled)

31 . A system configured to catalyze a chemical reaction, the system comprising:
a back gate device comprising:
a dielectric material; and
a back gate material; and
a catalyst layer, wherein the dielectric material is between the catalyst layer and the back gate material, the catalyst layer and the back gate material are electrically coupled, and the back gate device is configured to transfer charge induced by the back gate material to the catalyst layer.

32 . The system of claim 31 , further comprising a dielectric support in direct contact with the catalyst layer.

33 . The system of claim 31 , wherein the catalyst layer comprises a metal layer, a bimetallic layer, a metal oxide layer, single metal atoms metal clusters comprising two or more atoms, metal oxide clusters, or a combination thereof.

34 . The system of claim 31 , wherein the catalyst layer has a thickness of less than 100 nm.

35 . The system of claim 31 , wherein the back gate voltage is a waveform.

36 . The system of claim 35 , wherein the waveform is a square wave, a sinusoidal wave, a sawtooth wave, a triangular wave, or a combination thereof.

37 . The system of claim 31 , wherein a frequency of the waveform is in a range of 0.1 Hz to 10 7 Hz.

38 . The system of claim 31 , wherein the dielectric material spontaneously polarizes in the presence of an electric field.

39 . The system of claim 38 , wherein the dielectric material comprises a ferroelectric material.

40 . The system of claim 38 , wherein the dielectric material comprises a paraelectric material.

41 . The system of claim 37 , wherein a frequency of the waveform is in a range of 100 Hz to 10,000 Hz.

42 . The system of claim 39 , wherein the ferroelectric material comprises one or more of barium titanate (BaTiO 3 ), potassium niobate (KnbO 3 ), lead titanate (PbTiO 3 ), lithium tantalate, strontium titanate (SrTiO 3 ).

43 . The system of claim 39 , wherein the ferroelectric material comprises BaZrO 3 doped with BaTiO 3 .

44 . The system of claim 40 , wherein the paraelectric material comprises one or more of silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), and tantalum pentoxide (Ta 2 O 5 ).

45 . The system of claim 31 , wherein the catalyst layer is formed directly on the dielectric material.

46 . The system of claim 33 , wherein the catalyst layer comprises a porous metal oxide.

48 . The system of claim 34 , wherein a thickness of the catalyst layer is less than 10 nm.

49 . The system of claim 31 , wherein is configured to transfer variable strain to the catalyst layer.

50 . The system of claim 31 , wherein the back gate device is configured to vary a binding energy of a chemical species to the catalyst layer.

Assignees

• Univ Minnesota

Inventors

• Frisbie Carl Daniel
• Dauenhauer Paul J
• Ardagh Matthew Alexander

Classifications

• B01J37/341

  making use of electric or magnetic fields, wave energy or particle radiation (use of flames, plasma or lasers B01J37/349) · CPC title

• C01C1/0411

  characterised by the catalyst · CPC title

• B01J2219/0801

  Controlling the process · CPC title

• B01J19/087

  employing electric or magnetic energy · CPC title

• C01C1/0417 Primary

  characterised by the synthesis reactor, e.g. arrangement of catalyst beds and heat exchangers in the reactor · CPC title