Abstract:
The present disclosure relates to a process for preparing a catalyst. The process comprises coating zeolite gel over the alumina support to obtain a chloride free zeolite gel coated alumina support, crystallizing the chloride free zeolite gel coated alumina support, washing, drying and calcining the crystallized zeolite coated alumina support to obtain a calcined crystallized chloride free zeolite coated alumina support, treating the calcined crystallized chloride free zeolite coated alumina support with ammonium nitrate to obtain sodium free support, washing, drying, and calcining the support to obtain a calcined chloride free zeolite coated alumina support, immersing the calcined chloride free zeolite coated alumina support in an active metal and a promoter metal solution mixture followed by stirring to obtain a metal coated chloride free zeolite coated alumina support, and drying and calcining the metal coated chloride free zeolite coated alumina support to obtain the catalyst.
Abstract:
The present disclosure provides a process for the reduction of residual acidity of halogenated polymer. The process involves treating the halogenated polymer to a physical process such as rotary vacuum drying and then neutralizing the treated halogenated polymer with alkaline metal salt solutions. The process requires less quantity of an economic neutralizing agent /base during chemical treatment, thus improving process economy without prejudicing quality of the final halogenated polymer.
Abstract:
The present disclosure relates to an integrated process for carboxylating and oxidizing an aromatic hydrocarbon substituted with at least one alkyl group. The process comprises the sub-steps of: carboxylating the aromatic hydrocarbon substituted with at least one alkyl group using carbon dioxide and at least one catalyst represented by formula I, (AxBy), optionally, in at least one liquid medium to generate a reaction mass comprising at least one oxidizing agent represented by a formula II (HxBy), and a carboxylated product substituted with at least one alkyl group; and (b) in-situ reacting the carboxylated product substituted with at least one alkyl group with the oxidizing agent represented by a formula II formed during sub-step of carboxylation to obtain oxidized product.
Abstract:
The present disclosure provides a process for preparing 1,3-butadiene; said process comprises dehydrogenating a feed containing at least one C4 hydrocarbon in the presence of at least one pincer ligated iridium catalyst and at least one hydrogen acceptor in a non-reactive medium at a temperature in the range of 100°C to 250°C to obtain a first stream containing a mixture of at least one butene, 1,3-butadiene and unreacted C4 hydrocarbon; separating 1,3-butadiene from said stream to obtain a second stream containing a mixture of at least one butene and unreacted C4 hydrocarbon; and oxidative dehydrogenating said second stream in the presence of at least one dehydrogenating agent and at least one catalyst to obtain 1,3-butadiene.
Abstract:
The present disclosure relates to a polymer composition having homogenous dispersion of a first polymer with a second polymer. The first polymer used in the present disclosure includes but is not limited to ethylene based homopolymer and ethylene based copolymer. The second polymer used in the polymer composition of the present disclosure has molecular weight higher than the molecular weight of the first polymer and heat of fusion greater than 200 J/g.
Abstract:
An apparatus for halogenation of a polymer is disclosed. The apparatus includes a reactor, at least one light source, a stirrer and a heater. The reactor contains a slurry of the polymer. The light source is disposed outside of the reactor at a distance ranging from 0.5 centimeter to 2 centimeters for facilitating irradiance of the slurry. The light source radiates a light of wavelength in the range of 250nm to 355nm. The stirrer is adapted to agitate the slurry. The heater is adapted to heat the slurry of the polymer. The blades on the stirrer and light source are arranged in such a way that slurry is maintained in uniform motion and reacted homogeneously to achieve desired conversion efficiently.
Abstract:
The present disclosure relates to a fiber suitable for packaging. The fiber comprises a photocatalyst and optionally, a silicon containing linker. The photocatalyst is bonded to the fiber by means of a first functional group pre-present on the fiber and optionally, a second functional group generated by a silicon containing linker. The chemical bonding between the fiber and the photocatalyst imparts durability and wash ability to the fiber. A packaging material prepared using the fiber of the present disclosure can be used for the storage of plant produce.
Abstract:
The present disclosure relates to a surface modified zeolite having formed pores therein, with apertures on the surface of the zeolite of diameter less than 4.40A without reduction of the pore volume. The present disclosure also relates to a process for the preparation of the surface modified zeolite and a method of selectively removing substances with molecular size below 4.4 A0 from fluids by using the surface modified adsorbents.
Abstract:
In accordance with the present disclosure, there is provided a solid state graft copolymerization process for the preparation of disentangled ultrahigh molecular weight polyethylene graft copolymers in which disentangled ultrahigh molecular weight polyethylene is admixed with at least one functional monomer and a free radical initiator to obtain a mixture; and the mixture thus obtained is subjected to solid state polymerization to obtain a graft copolymer of disentangled ultrahigh molecular weight polyethylene. The graft copolymers of disentangled ultrahigh molecular weight polyethylene shows better crystallization temperature that ranges between 117°C to 121°C and improved decomposition temperature (T100) that ranges between 460°C to 480°C.
Abstract:
The present disclosure relates to a dehydrogenation catalyst composite comprising at least one alumina support, comprising a core of alpha alumina and at least one layer of gamma alumina, delta alumina or theta alumina, impregnated with at least one layer of at least one alkaline earth metal element and at least one layer comprising at least one catalytic metal element, at least one group VIA element and optionally, at least one halogen element. The present disclosure also relates to a process for preparation of the dehydrogenation catalyst composite.