Topic
Liquid paraffin
About: Liquid paraffin is a research topic. Over the lifetime, 6185 publications have been published within this topic receiving 52956 citations.
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13 Apr 2020
TL;DR: The devised way of synthesized microporous carbon is green and simple, which is suited to mass production for the adsorption of toluene from paraffin liquid and reducing environmental pollution.
Abstract: Herein, polypyrrole-based porous carbon (PPC) was prepared by ZnCl2 activation for toluene adsorption from paraffin liquid. The structure properties were adjusted by a dosage of activating agents and carbonization temperature. The result with a 3:1 mass ratio of ZnCl2/PPy at 600 °C showed the highest micropore area and percentage of micropore volume of 1105 m2/g and 86.26%, respectively. In addition, the PPC surface was rich in functional groups and obtained a high N-doped content from 7.00 to 8.82%. The toluene adsorption behavior onto the PPC was comprehensively investigated including isotherms, kinetics, and thermodynamics. The adsorption isotherm accorded with the Freundlich model well, and the kinetic model was fitted more closely to the pseudo-second-order chemisorption. The thermodynamic research uncovered that the adsorption was spontaneous and an endothermic process in essence. The ZnCl2 activation mechanism is discussed based on TG/TGA curves and pore structure analysis at last. The devised way of synthesized microporous carbon is green and simple, which is suited to mass production for the adsorption of toluene from paraffin liquid and reducing environmental pollution.
39 citations
TL;DR: In this article, an organic compound containing S, N, B and O elements is synthesized with the reaction of 2-mercaptobenzothiazole and chloroethanol in aqueous solution firstly, then the product reacts with butanol and boric acid in toluene solution at reflex for 6 h.
39 citations
TL;DR: By using paraffin liquid and oleic acid as the solvent and ligand, highly-fluorescent red to near-infrared (NIR)-emitting cadmium selenium telluride (CdSe1−xTex) alloyed quantum dots with photoluminescence quantum yield (PLQY) up to 70% were successfully prepared as mentioned in this paper.
Abstract: By using paraffin liquid and oleic acid as the solvent and ligand, highly-fluorescent red to near-infrared (NIR)-emitting cadmium selenium telluride (CdSe1−xTex) alloyed quantum dots (QDs) with photoluminescence quantum yield (PLQY) up to 70% were successfully prepared. The as-prepared CdSe1−xTex QDs also demonstrated good optical stabilities against the temperature change and photobleaching due to their gradient “CdTe-rich core/CdSe-rich surface” quasi “core/shell” structure, which was confirmed by studying the alloying process of CdSe1−xTex QDs. Moreover, the as-prepared red to NIR CdSe1−xTex QDs were successfully incorporated into the carboxyl capped porous polystyrene (PS) microbeads to fabricate red to NIR-emitting microbeads with low in vitro cytotoxicity, and the biotinylated goat anti-mouse IgG could be specifically coupled to the optical encoded beads via mouse anti-human chorionic gonadotrophin connected to the carboxyl groups on the encoded microbeads successfully, which suggested promising application of CdSe1−xTex QDs in multiplexed bioassays.
39 citations
TL;DR: The sex-ratio of the resulting offspring is not significantly altered by keeping the spermatozoa outside the body, and the effect of temperature on the velocity of many biological reactions which follow approximately the van9t Hoff and Arrhenius questions is doubtful.
Abstract: 1. A technique is described for the investigation of in vitro problems with spermatozoa removed from the vas deferens of the rabbit. The method involves the protection of the spermatozoa by means of liquid paraffin from evaporation of rapid gaseous exchange. 2. The survival of functional integrity (fertilizing capacity) has been shown to be a function of temperature and the effect of temperature has been studied over the range from 45° C. to 0° C. Above body temperature the spermatozoa are rapidly destroyed. At body temperature (40° C.) maximal survival is about 13 hours. As the temperature is lowered survival becomes increasingly prolonged until a maximum of 7 days is reached at 15°C. The curve over the range from 15° C. to 40° C. is only approximately exponential and it is doubtful whether an analogy can be drawn between the effect of temperature on the velocity with which the spermatozoa are destroyed, and the effect of temperature on the velocity of many biological reactions which follow approximately the van9t Hoff and Arrhenius questions. Below the optimum temperature (10°-15°C.) the velocity of destruction is acclerated by fall of temperature. 3. The sex-ratio of the resulting offspring is not significantly altered by keeping the spermatozoa outside the body.
39 citations
Patent•
29 Sep 1994
TL;DR: In this article, a floatable combustion device is described, consisting of a conical top member and a bottom ballast member each fabricated of a thermally conductive material that serve to both melt solid fuel and heat the liquid fuel being supplied to the flame with an interior wick.
Abstract: A combustion apparatus that comprises a floatable combustion device which rests atop the surface of a mass of fuel such as solid paraffin or a quantity of liquid fuel such as liquid paraffin or vegetable oil contained within a fuel vessel. The combustion device has a substantially conical top member and a bottom ballast member each fabricated of a thermally conductive material that serve to both melt solid fuel and heat the liquid fuel being supplied to the flame with an interior wick. Supporting this wick is a conical buoyant member that allows the device to float when positioned in liquid fuel or in melted solid fuel.
39 citations