The present article reports on the solvent-free dehydrogenation of γ-terpinene (1) in a planetary ball mill affording p-cymene (2) as the predominant reaction product. The influence of various reaction parameters and technical variables on the transformation of 1 has been assessed.

006 Solvent-free dehydrogenation of -terpinene in a ball mill: Investigation of reaction parameters 007 Biomimetic green chemistry 009 Biomimicry 010 Molecular biomimetics: Nanotechnology through biology 012 Green engineering in the high school setting: Non existent or a ...

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Therefore an excess of Fe3+ has a negative effect on catalytic activity and selectivity of zinc ferrite for the oxidative dehydrogenation of 1-butene, but acts as a promoter for competing hydrogenation and combustion side reactions. Keywords: Zinc ferrite; Oxidative dehydrogenation; Butene; 1.3-butadiene; Iron Progress in Petrochemical Science

Amberlyst-15, a common industrial catalyst had very poor activity and conversion even at 150 °C. The dimer mixtures were upgraded through hydrogenation over PtO2 and fractional distillation. The synthesized fuels have a density of 0.94 g/cm3 and a net volumetric heating value of 39.5 MJ/L (141 74...

Effects of γ-terpinene, terpinolene, ... out the study, composited, ground in a Wiley Mill (2-mm screen), and analyzed for DM by drying at 100°C for 24 h (DM = 92.3%). Lambs were weighed weekly before the 0800 feeding on d 5. Lambs were adapted to alfalfa pellets for 5 d in a

The high energy collision occurs at room temperature or a temperature ranging from about 25° C. to about 275° C. The ball mill is operated for a period of time to achieve high-energy collision of the milling balls for up to 100 hours, but preferably for a time period ranging from about 25 hours to about 50 hours.

Aug 23, 2014 · Medicinal plants are an important source of substances which are claimed to induce antimicrobial, antimutagenic and antioxidant effects. Many plants have been used due to their antimicrobial treatments. Antimicrobial and antioxidant activities .

One of three isomeric monoterpenes differing in the positions of their two double bonds (<greek>beta</greek>- and <greek>gamma</greek>-terpinene being the others).

Reaction parameters for oxidative dehydrogenation of γ-terpinene 9 to p-cymene 10 were studied in great detail by Stolle et al. (Scheme 6.4) [5].It was found that potassium permanganate is the most efficient oxidant in mechanochemical reaction. Alumina was used as milling auxiliary in planetary ball mill Pulverisette, with ZrO 2 milling beakers (V = 45 mL) and 5 × 15 mm balls.

umbelliferous crops, Coriandrum sativum L. and Foeniculum vulgare Mill, cultivated in Sudan. The essential oils from the samples were obtained by hydro-distillation and analyzed by GC-MS for identification of their chemical composition. The essential oil content of C. sativum fruits was 0.8% (v/w).

Essential Oil Composition (Terpenes) of Salacia senegalensis Lam (DC) Leaf Adumanya OCU*1, Uwakwe AA2 and Essien EB2 1D ep ar tm nof S ciL b yT hlg,I P Umuagwo, Imo State, Nigeria D2 ep a rtm n ofB i ch s y,U v P H u Rivers State, Nigeria *Corresponding author e-mail: [email protected] A B S T R A C T

200 h of RBM and then ball milled with 7 wt% Mn 3.6 Ti 2.4 powders under 50 bar of a hydrogen gas atmosphere for (a) 0, (b) 6, (c) 12.5, (d) 25, (e) 37.5, and (f) 50 h. this stage of milling, the local composition of the composite . The HRTEM image of the powders after the final stage of ball milling (50 h) is shown in Fig. 2. The image

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FIG. 7B illustrates the dehydrogenation kinetics of the nanocomposite powders investigated at 250° C. and 275° C. The sample examined at 275° C. showed excellent desorption kinetics, indexed by the relatively short time (˜5 min) required to release about −4.4 wt. % of hydrogen. A saturation value (−5.2 wt. % H 2) was reached after only 10 min.

Ball mill Wikipedia. A ball mill is a type of grinder used to grind, blend and sometimes for mixing of materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering. It works on the principle of impact and attrition: size reduction is done by impact as . Installation Manual Ball Mill agatinas

Ginger (Zingiber officinale) essential oil (ZOE) possesses strong antibacterial and antifungal activities. In this study, the antifungal activity of ZOE against Aspergillus flavus was investigated, and a chemical analysis was carried out to identify compounds that control fungal growth. A total of 37 compounds were identified by gas chromatographic analysis with a mass detector, and the ...

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200 h of RBM and then ball milled with 7 wt% Mn 3.6 Ti 2.4 powders under 50 bar of a hydrogen gas atmosphere for (a) 0, (b) 6, (c) 12.5, (d) 25, (e) 37.5, and (f) 50 h. this stage of milling, the local composition of the composite . The HRTEM image of the powders after the final stage of ball milling (50 h) is shown in Fig. 2. The image