Product details

Fractional distillation with the bubble tray column with Cobra4

Fractional distillation with the bubble tray column with Cobra4

Item no.: P3031660

Difficulty Expenditure of Time print
  • Description
  • Scope of Supply
  • Accessories
  • Downloads and Documents

Principle

In countercurrent distillation (rectification) using a column, the rising vapour can enter into interactions with the condensate. In this manner, a fractional distillation, i.e. a distillation in several steps for the separation of substances with similar boiling points, can be performed in a single apparatus. If bubble tray columns are used condensate can be removed from the individual bubble trays.

Benefits

  • Simplified implementation: all pre-settings already prepared
  • Didactic gas chromatograph included
  • Glass jacket system easily expandable
  • Simultaneous temperature measurement at four points

Tasks

  1. Investigate the mode of operation of a fractionating tower on a two-stage bubble tray column. Distil a mixture of three n-alcanes first with total reflux and then without any reflux.
  2. Subsequently, examine and compare the initial mixture, the sump product, the head products and the condensates of both trays gas chromatographically.

What you can learn about

  • Bubble tray column
  • Rectification
  • Continuous and discontinuous distillation
  • Vapour pressure
  • Vaporisation
  • Condensation
  • Raoult's law
  • Gas chromatography

Necessary accessories

  • Precision balance 620g/0.001g

Software included. Computer not provided.

Device Name Item no. Qty
Dimroth condenser MAU-26525500 1,00
Dropping funnel, 50 ml, Gl 18 MAU-27222000 1,00
Cooling jacket, GL 25/8 MAU-27225000 1,00
curricuLAB measureLAB, multi-user license 14580-61 1,00
Retort stand, h = 750 mm 37694-00 1,00
Glass tube, straight, l=80 mm, 10/pkg. 36701-65 1,00
Syringe 1ml, Luer, 10 pcs 02593-03 1,00
Holder for sensors with support rod 12680-00 3,00
Beaker, DURAN®, tall form, 150 ml 36003-00 2,00
Tubing connector, ID 6-10mm 47516-01 2,00
Funnel, glass, top dia. 50 mm 34457-00 1,00
Stopper,IGJ 29/32,glass,clear 41256-10 1,00
Wrench for steel cylinders 40322-00 1,00
Silicon grease Molykote, 50 g 31863-05 1,00
Right angle boss-head clamp 37697-00 14,00
Ethyl acetate 250 30075-25 1,00
Measure probe for gas chromatog 36670-10 1,00
Support rod, stainless steel, l = 250 mm, d = 10 mm 02031-00 1,00
Cobra4 Wireless/USB-Link incl. USB cable 12601-10 2,00
Round-bott.flask, 500ml,IGJ 29/32 35862-00 1,00
Teflon sleeve IGJ 19, 10 pcs 43616-00 1,00
Hose clip, diam. 8-16 mm, 1 pc. 40996-02 10,00
Snap-cap vials,d=24mm,h=52mm,10p. 33621-03 2,00
Rubber caps, 10 pcs 39275-03 1,00
Connecting cord, 32 A, 250 mm, blue 07360-04 1,00
n-hexane,puriss. 100 31369-10 1,00
Glass tubes,l.250 mm, pkg.of 10 36701-68 1,00
Cannula 0,45x13 mm, Luer, 20 pcs 02598-04 1,00
Immersion probe NiCr-Ni, teflon, 300 °C 13615-05 4,00
Pasteur pipettes, 250 pcs 36590-00 1,00
Heating mantle f. roundbottom flask, 250ml 49542-93 1,00
Bath for thermostat, makrolon 08487-02 1,00
Connecting tube,IGJ29/32-GL18/8 35678-02 1,00
Table stand for 2 l steel cylinders 41774-00 1,00
Gas bar 40466-00 2,00
Power regulator, 230 V, with phase controlled modulator 32286-93 1,00
Universal clamp 37715-00 12,00
Water jet pump, plastic 02728-00 1,00
Water, distilled 5 l 31246-81 2,00
Control unit gas chromatograph 36670-99 1,00
Support rod, stainless steel, 750 mm 02033-00 4,00
Cobra4 Sensor-Unit Chemistry 12630-00 1,00
Bubble tray column, model, with 2 trays 35914-15 1,00
Teflon sleeve IGJ 29, 10 pcs 43617-00 1,00
Connecting caps,10 pcs, GL18 41230-03 1,00
Dish, plastic, 150x150x65 mm 33928-00 1,00
Rubber tubing, i.d. 6 mm 39282-00 10,00
n-pentane 250 31707-25 1,00
Boiling beads, 200 g 36937-20 1,00
Microliter syringe, 10 micro-l 02607-00 1,00
Acetone, chemical pure, 250 ml 30004-25 1,00
Graduated cylinder, Borosilicate, 100 ml 36629-00 1,00
Clamp for heating mantle 49557-01 1,00
External circulation set for thermostat Alpha A 08493-02 1,00
Connecting tube,IGJ 19/26-GL25/12 35800-05 1,00
Steel cylinder helium, 2 l, filled 41776-00 1,00
Glass rod, boro 3.3, l=200mm, d=5mm 40485-03 1,00
Spoon, special steel 33398-00 1,00
Lab thermometer,-10..+110 °C 38056-00 1,00
Stopwatch, digital, 1/100 s 03071-01 1,00
Soap bubble flow meter 36675-00 1,00
Support rod, stainless steel, 1000 mm 02034-00 2,00
Cobra4 Sensor-Unit 2 x Temperature, NiCr-Ni 12641-00 2,00
Column head, with stopcock, ST 19/26 35919-01 1,00
Beaker, Borosilicate, tall form, 250 ml 46027-00 1,00
Gasket for GL18, 8mm hole, 10 pcs 41240-03 1,00
Security bottle with manometer and three-way stopcock 34170-88 1,00
Rubber tubing,vacuum,i.d.6mm 39286-00 2,00
Glass wool 10 g 31773-03 1,00
Glass jacket 02615-00 1,00
Ethyl alcohol, absolute 500 30008-50 1,00
Gas separation column 36670-00 1,00
Support base DEMO 02007-55 2,00
Immersion thermostat Alpha A, 230 V 08493-93 1,00
Round bottom flask, 250 ml, 2-neck, GL25/12, GL18/8 35843-15 1,00
Clamp f.ground joint,plastic,NS19 43614-00 2,00
Hose clip f.12-20 diameter tube 40995-00 4,00
Reducing valve for CO2 / He 33481-00 1,00
Laboratory pen, waterproof, black 38711-00 1,00
Connecting cord, 32 A, 250 mm, red 07360-01 1,00
n-heptane, extra pure 250 31366-25 1,00
Adapter, BNC-plug/socket 4 mm 07542-26 1,00
Document     Filesize
p3031660e.pdf Experiment guide, English 627.79 KB

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