Nano-carbon platform for highly selective and fast microwave-assisted chemical reactions

Abstract

The present invention relates to the chemical synthesis field. More particularly, the invention relates to a nano-carbon Platform for highly selective and fast Microwave-assisted Chemical Reactions. The process involves (a)Nano-carbon materials are placed uniformly in microwave reactor during microwave-assisted synthesis, (b) The reactants for the desired chemical reaction are put on nano-carbon platform, (c)Now the reactor is put in place inside the microwave, (d)Upon functioning, microwave irradiation starts to interact with the reactants as well as nano-carbon platform, (e)Nano-carbons being very good microwave absorber, absorbs microwave energy, and get excited attaining very high temperature, which is required for the reactants to initiate the chemical conversion, (f) in due course of time, the desired chemical reaction gets completed with the desired product.

Description

FIELD OF INVENTION:The present invention relates to the chemical field. More particularly, theinvention relates to a Nano-carbon Platform for highly selective and fastMicrowave-assisted Chemical Reactions.BACK GROUND:Generally, thermal reaction is associated with application of heat energydirectlyto attain very high temperature, which has many disadvantages. Discoveryof microwave (MW) introduced magic heating and established itself as a potentialalternative to conventional thermal heating in the synthesis of organic, inorganic,and nanomaterials. However, if very high temperature is essentially needed tocarry out a chemical conversion in MW, it becomes practically extremely difficultto reach such a high temperature following dipole-polarization and ionicconduction mechanisms. To overcome this issue, an alternative approach can beadopted, which involves use of nanocarbons like carbon black, carbon nanotubesand graphene in MW reactor, which on being exposed to MW irradiation getexcited by absorbing MW energy, which in turn facilitate conversion of desiredreaction by attaining desired temperature.US8167973B2 discloses a process for synthesizing carbon-metal nanocomposites.In one embodiment, the process includes the steps of preparing a metal derivativeor a metal chelated derivative of a carbon-containing precursor in solid form, andsubjecting the metal derivative or metal chelated derivative of a carbon-containingprecursor in solid form to microwave radiation at a frequency in the range of 900MHz to 5.8 GHz, for a period of time effective to generate a heat flow from insideof the metal derivative or metal chelated derivative of a carbon-containingprecursor in solid form to the outside such that the temperature of the metalderivative or metal chelated derivative of a carbon-containing precursor in solidform reaches 1,000° C. in less than 6 minutes with a temperature (T) derivativeover time (t), ΔT / Δt, no less than 2.5° C. / second to form carbon-metalnanocomposites.US9249528B2 directed to a method of forming, producing or manufacturingfunctionalized nanomaterials, and, specifically, soluble functionalizednanomaterials. The presently described invention also relates to nanomaterialbased composites consisting of a target material, which can include ceramic,polymer, or metallic matrices incorporated into or grown on nanomaterials, aswell as a method or synthesis technique for the formation, production, ormanufacture of nanomaterial-based composites through microwave-inducedreaction.US10344404B2 relates to a preparation method for lowering a production cost ofa high performance carbon fiber using a nanocarbon composite carbon fiberprecursor fiber crosslinked by electron beam. More particularly, the presentdisclosure relates to a preparation method of a nanocarbon composite carbonfiber, including a nanocarbon containing step for containing nanocarbon in astructure of a carbon fiber precursor fiber, a nanocarbon composite carbon fiberprecursor fiber preparation step for forming a composite of the nanocarbon andthe carbon fiber precursor fiber by electron beam irradiation to enablecrosslinking for improved heat resistance of the carbon fiber precursor fibercontaining the nanocarbon, an oxidation⋅stabilization step foroxidizing⋅stabilizing the nanocarbon composite carbon fiber precursor fiber, and acarbonization step for carbonizing the oxidized⋅stabilized nanocarbon compositecarbon fiber precursor fiber, and a nanocarbon composite carbon fiber preparedby the preparation method.Discovery of microwave (MW) introduced magic heating and established itself asa potential alternative to conventional thermal heating in the synthesis of organic,inorganic, and nanomaterials. However, if very high temperature is essentiallyneeded to carry out a chemical conversion in MW, it becomes practicallyextremely difficult to reach such a high temperature following dipole-polarizationand ionic conduction mechanisms. To overcome this issue, an alternativeapproach can be adopted, which involves use of nanocarbons like carbon black,carbon nanotubes and graphene in MW reactor, which on being exposed to MWirradiation get excited by absorbing MW energy, which in turn facilitateconversion of desired reaction by attaining desired temperature.No such technology is available presently to address this issue, using MWirradiation. However, in case of very high temperature, scientists are engaged tofind a solution by using solvents, having high boiling points with optimumdielectric loss, but yet to be succeeded.OBJECTIVE OF THE INVENTION:1. It is an object of the invention to provide a process of synthesis of metalphthalocyanine from 1,4-Dicyanobenzene for Nano-carbon Platform.2. It is another object of the invention to provide a mechanism to achieve hightemperature by exciting nanocarbons through microwave irradiation.3. It is another object of the invention to provide Nano-carbon Platform forhighly selective and fast Microwave-assisted Chemical Reactions.4. It is another object of the invention to provide comparative study amongconventional, microwave-assisted and microwave-assisted nanocarbons forthe synthesis of metal-phthalocyanine from 1,4-Dicyanobenzene.BRIEF DESCRIPTION OF THE DRAWINGS:These and other features, aspects, and advantages of the present invention willbecome better understood when the following detailed description is read withreference to the accompanying drawings in which like characters represent likeparts throughout the drawings, wherein:Figure 1 for illustrates a systematic illustration of mechanism to achieve hightemperature by exciting nanocarbons through microwave irradiation.Further, skilled artisans will appreciate that elements in the drawings areillustrated for simplicity and may not have been necessarily been drawn to scale.For example, the flow charts illustrate the method in terms of the most prominentsteps involved to help to improve understanding of aspects of the presentinvention. Furthermore, in terms of the construction of the device, one or morecomponents of the device may have been represented in the drawings byconventional symbols, and the drawings may show only those specific details thatare pertinent to understanding the embodiments of the present invention so as notto obscure the drawings with details that will be readily apparent to those ofordinary skill in the art having benefit of the description herein.DETAILED DESCRIPTION:For the purpose of promoting an understanding of the principles of the invention,reference will now be made to the embodiment illustrated in the figures and specificlanguage will be used to describe the same. It will nevertheless be understood that nolimitation of the scope of the invention is thereby intended, such alterations andfurther modifications in the illustrated system, and such further applications of theprinciples of the invention as illustrated therein being contemplated as wouldnormally occur to one skilled in the art to which the invention relates.It will be understood by those skilled in the art that the foregoing general descriptionand the following detailed description are exemplary and explanatory of the inventionand are not intended to be restrictive thereof.Reference throughout this specification to "an aspect", "another aspect" or similarlanguage means that a particular feature, structure, or characteristic described inconnection with the embodiment is included in at least one embodiment of thepresent invention. Thus, appearances of the phrase "in an embodiment", "in anotherembodiment" and similar language throughout this specification may, but do notnecessarily, all refer to the same embodiment.The terms "comprises", "comprising", or any other variations thereof, are intended tocover a non-exclusive inclusion, such that a process or method that comprises a list ofsteps does not include only those steps but may include other steps not expresslylisted or inherent to such process or method. Similarly, one or more devices orsystems or elements or structures or components proceeded by "comprises... a" doesnot, without more constraints, preclude the existence of other devices or othersystems or other elements or other structures or other components or additionaldevices or additional systems or additional elements or additional structures oradditional components.Unless otherwise defined, all technical and scientific terms used herein have the samemeaning as commonly understood by one of ordinary skill in the art to which thisinvention belongs. The system, methods, and examples provided herein areillustrative only and not intended to be limiting.The terms "a" and "an" herein do not denote a limitation of quantity, but ratherdenote the presence of at least one of the referenced items.The terms "having", "comprising", "including", and variations thereof signify thepresence of a component.The term "nanoparticles" signifies a small particle that ranges between 1 to 100nanometres in size.Now the present invention will be described below in detail with reference to thefollowing embodiment.Generally speaking, the present invention provides a microwave-assistednanocarbons for the synthesis of metal-phthalocyanine from 1,4-Dicyanobenzene.Example 1Nano-carbon materials are placed uniformly in microwave reactor during microwave-assisted synthesis. The reactants for the desired chemical reaction are put on nanocarbon platform. Now the reactor is put in place inside the microwave. Uponfunctioning, microwave irradiation starts to interact with the reactants as well asnano-carbon platform. Nano-carbons being very good microwave absorber, absorbsmicrowave energy, and get excited attaining very high temperature, which is requiredfor the reactants to initiate the chemical conversion. In due course of time, the desiredchemical reaction gets completed with the desired product. It is critical here tomonitor the reaction temperature and pressure in order to make desired thermaltemperature available. To do that, primarily calculated amount of nano-carbons are(so as to support attaining the reaction temperature) being placed in the reactor. Eventhan if the temperature exceeds the optimum temperature, suitable cooling systemmay be installed in order to monitor the temperature.Example-2Usually, C N is highly inert towards chemical reactions, therefore,high temperature (more than 180 C) as well as catalyst is require to activatethe C N group in conventional reaction condition.Comparison among conventional, microwave-assisted and microwave-assisted nanocarbonsfor the synthesis of metal-phthalocyanine from 1,4-Dicyanobenzene.Ref. 1Ref. 2Our WorkWhile the invention has been described with respect to synthesis of metalphthalocyanine from 1,4-Dicyanobenzene form which include presently preferredmodes of carrying out the invention, those skilled in the art will appreciate that thereare numerous variations and permutations of the above described embodiments thatfall within the spirit and scope of the invention. It should be understood that theinvention is not limited in its application to the details of construction andarrangements of the components set forth herein.Variations and modifications of the foregoing are within the scope of the presentinvention. Accordingly, many variations of these embodiments are envisaged withinthe scope of the present invention.The foregoing descriptions of specific embodiments of the present invention havebeen presented for purposes of description. They are not intended to be exhaustive orto limit the present invention to the precise forms disclosed, and obviously manymodifications and variations are possible in light of the above teaching.The embodiments were chosen and described in order to best explain the principles ofthe present invention and its practical application, and to thereby enable others skilledin the art to best utilize the present invention and various embodiments with variousmodifications as are suited to the particular use contemplated. It is understood thatvarious omissions and substitutions of equivalents are contemplated as circumstancesmay suggest or render expedient, but such omissions and substitutions are intended tocover the application or implementation without departing from the spirit or scope ofthe present invention.

Claims

1. A process of synthesis of metal-phthalocyanine from 1,4-Dicyanobenzene for Nano-carbon Platform comprising the step of;2. The process as claimed in claim 1, wherein high temperature is achieved by exciting nanocarbons through microwave irradiation.

3. The process as claimed in claim 1, wherein on being exposed to microwave (MW) irradiation, delocalized pi-electrons of nano-carbon network absorb MW energy, get excited to become red-hot, reaching very high temperature needed for desired chemical conversion.

4. A process as claimed in claim 1, comprising the step of: (a) Nano-carbon materials are placed uniformly in microwave reactor during microwave-assisted synthesis, (b) The reactants for the desired chemical reaction are put on nanocarbon platform, (c) Now the reactor is put in place inside the microwave, (d) Upon functioning, microwave irradiation starts to interact with the reactants as well as nano-carbon platform, (e) Nano-carbons being very good microwave absorber, absorbs microwave energy, and get excited attaining very high temperature, which is required for the reactants to initiate the chemical conversion, (f) In due course of time, the desired chemical reaction gets completed with the desired product.