ChemicalBook CAS DataBase List 2-Methylhexane

2-Methylhexane synthesis

11synthesis methods

Product Name:2-Methylhexane
CAS Number:591-76-4
Molecular formula:C7H16
Molecular Weight:100.2

142-82-5 Synthesis

142-82-5
583 suppliers
$16.00/25ML

591-76-4
78 suppliers
$85.00/5mL

Yield:591-76-4 40%

Reaction Conditions:

with hydrogen;0.3percent Pt; 1percent Pd/X-600 ASA at 379; under 22502.3 Torr; for 20 h;Product distribution / selectivity;

Steps:

1
A known amount (0.35 g) of catalyst was loaded in a reactor and reduced for 1.5 h at 440⁰C under H₂ flow of gas hourly space velocity (GHSV) 6200 L/kg/h at 30 bar. The catalyst was subsequently contacted with a flow of n- heptane in H₂ (4 vol%) at GHSV of 4000 L/kg/h and 30 bar and cooled down to 200⁰C over 20 hours while the yield of isoheptane was quantified by means of gas chromatography.The temperature required to achieve 40% yield of isoheptane for various weakly acidic catalysts was determined and the results are presented in Table 1 below. Results are also presented for three strongly acidic zeolite catalysts and two non-acidic catalysts by way of comparison. Catalysts were prepared according to the methods described in Example 2 below.ASA supports were obtained commercially from CRI(X-600) and Catalysts & Chemicals Industrial Co. Ltd (CCIC) .H-ZSM-5, H-ZSM-12 and H-Beta are commercially available zeolites.Silica (Siθ2) and alumina (AI2O3) were obtained commercially from CRI.The supports were impregnated by Pt and/or Pd by means of well-known incipient wetness impregnation. The catalyst acidity is defined as the temperature that is required to achieve 40% yield in isoheptane.Catalysts with strong, weak and no acidity exhibit a temperature requirement of <300°C, 310-400⁰C and >400°C, respectively.Table 1 shows clearly that catalysts based on ASA are ^λweakly acidic' . In contrast, catalysts based on ZSM-5, ZSM-12 and Beta zeolites are ^λstrongly acidic' whereas catalysts based on SiO₂ and Al₂θ3 or ^on- acidic'

References:

SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.;HAAN, Rene, Johan;LANGE, Jean-Paul WO2011/15643, 2011, A1 Location in patent:Page/Page column 10; 11; 12

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