FR2370242A1 - Recovering solar energy by photochemical isomerisation - of a trans isomer to the cis form, then converting it back exothermically - Google Patents

Recovering solar energy by photochemical isomerisation - of a trans isomer to the cis form, then converting it back exothermically

Info

Publication number
FR2370242A1
FR2370242A1 FR7633216A FR7633216A FR2370242A1 FR 2370242 A1 FR2370242 A1 FR 2370242A1 FR 7633216 A FR7633216 A FR 7633216A FR 7633216 A FR7633216 A FR 7633216A FR 2370242 A1 FR2370242 A1 FR 2370242A1
Authority
FR
France
Prior art keywords
cis
trans
solar energy
energy
trans isomer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7633216A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Battelle Development Corp
Original Assignee
Battelle Development Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Battelle Development Corp filed Critical Battelle Development Corp
Priority to FR7633216A priority Critical patent/FR2370242A1/en
Publication of FR2370242A1 publication Critical patent/FR2370242A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/127—Sunlight; Visible light
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/02—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/10—The polymethine chain containing an even number of >CH- groups
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B7/00—Indigoid dyes

Abstract

Exploitation and recovery of solar energy comprises (i) exposing the trans isomer of a cpd. (I) to sunlight to convert much of it to the cis form. (ii) heating the cis-(I) to a sufficient temp. to initiate conversion back to trans-(I) with release of thermal energy and (iii) continuing the conversion without furtehr introduction of energy using a part of the liberated energy to effect the conversion while the rest is used elsewhere for other purposes. Trans-(I) is dissolved and/or dispersed in an aq. liq. contg. >=50 vol % water and is isomerised by exposure to light of wavelength 350-1200 nm. The absorption max. in sunlight, of trans-(I) is at 350-800 nm while at of cis-(I) is at shorter wavelengths. The photochemical reaction is efficient and occurs with min. deterioration. The solar energy can be stored as cis (I) until needed. Typical (I) include N,N'-diacetylindigo, stilbene or 3,3'-diethyloxacyanine iodide.
FR7633216A 1976-11-04 1976-11-04 Recovering solar energy by photochemical isomerisation - of a trans isomer to the cis form, then converting it back exothermically Withdrawn FR2370242A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7633216A FR2370242A1 (en) 1976-11-04 1976-11-04 Recovering solar energy by photochemical isomerisation - of a trans isomer to the cis form, then converting it back exothermically

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7633216A FR2370242A1 (en) 1976-11-04 1976-11-04 Recovering solar energy by photochemical isomerisation - of a trans isomer to the cis form, then converting it back exothermically

Publications (1)

Publication Number Publication Date
FR2370242A1 true FR2370242A1 (en) 1978-06-02

Family

ID=9179522

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633216A Withdrawn FR2370242A1 (en) 1976-11-04 1976-11-04 Recovering solar energy by photochemical isomerisation - of a trans isomer to the cis form, then converting it back exothermically

Country Status (1)

Country Link
FR (1) FR2370242A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199111A2 (en) * 1985-03-22 1986-10-29 Matsushita Electric Industrial Co., Ltd. Liquid crystal compositions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199111A2 (en) * 1985-03-22 1986-10-29 Matsushita Electric Industrial Co., Ltd. Liquid crystal compositions
EP0199111A3 (en) * 1985-03-22 1987-01-07 Matsushita Electric Industrial Co., Ltd. Liquid crystal compositions
US4778619A (en) * 1985-03-22 1988-10-18 Matsushita Electric Industrial Co., Ltd. Liquid crystal compositions

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Legal Events

Date Code Title Description
ST Notification of lapse