Hydrothermal Lab

Dick­son-type re­ac­tor

This fle­xi­ble re­ac­tion cell set­up was in­iti­al­ly de­scri­bed by Dick­son et al. (1963) and la­ter si­gni­fi­cant­ly mo­di­fied by Sey­fried et al. (1979, 1987). It can be uti­li­zed to in­ves­ti­ga­te equi­li­bri­um pro­ces­ses that oc­cur wi­t­hin hydro­ther­mal sys­tems. Flu­id and so­lid re­ac­tants re­si­de wi­t­hin a cor­ro­si­on re­sis­tant fle­xi­ble re­ac­tion cell made of gold or ti­ta­ni­um (Wu et al. 2016). Pres­su­re and tem­pe­ra­tu­re can be ad­jus­ted in­de­pen­dent­ly up to a le­vel of 50 MPa and 400 °C. The set­up al­lows for con­co­mitant flu­id sam­pling and so­lid re­ac­tants can be re­co­ve­r­ed upon ter­mi­na­ti­on of an ex­pe­ri­ment. Four cust­o­mi­zed au­to­cla­ve sys­tems are avail­able in the Hydro­ther­mal Lab (Hy­Lab) of the Pe­tro­lo­gy of the Oce­an Crust re­se­arch group.

  • Dickson FW, Blount CW and Tunell G (1963): Use of hydrothermal solution equipment to determine the solubility of anhydrate in water from 100°C to 275°C and from 1 bar to 1000 bars pressure. American Journal of Science. | doi:10.2475/ajs.261.1.61 |
  • Seyfried WE, Gordon PC, Dickson FW (1979): A new reaction cell for hydrothermal solution equipment. American Mineralogist. |PDF|
  • Seyfried WE, Janecky DR and Berndt ME (1987): Rocking autoclaves for hydrothermal experiments. II. The flexible reaction-cell system. In: Hydrothermal Experimental TechniquesWiley-Interscience Publications. |PDF|
  • Wu SJ, Cai MJ, Yang CJ and Li KW (2016): A new flexible titanium foil cell for hydrothermal experiments and fluid sampling. Review of Scientific Instruments. | doi:10.1063/1.4963700 |
Ein Batchreaktor mit angeschlossener Druckzuleitung, platziert in einem Heizsystem, sowie eine daneben stehende Kontrolleinheit
Mit Hilfe einer Spritze wird über ein Pebrobungsventil eine Fluidprobe aus einem Batchreaktor entnommen.
Öffnung einer Goldreaktionszelle aus der feste Reaktionsprodukte nach einem Experiment herausgeschüttet werden.

X-Ray trans­pa­rent flow-through re­ac­tor

This flow-through set­up was de­si­gned un­der the lead of Dr. Wolf-Achim Kahl and enables per­co­la­ti­on ex­pe­ri­ments in­ves­ti­ga­ting the in­ter­de­pen­den­cies of po­ro­si­ty, per­me­a­bi­li­ty, flu­id flow ra­tes as well as pore space geo­me­try and their feed­back re­la­ti­ons­hip in the cour­se of dis­so­lu­ti­on and pre­ci­pi­ta­ti­on re­ac­tions (Kahl et al. 2016). Rock co­res (up to ø 19 mm) or pow­der sam­ples are con­fi­ned wi­t­hin an X-ray trans­pa­rent flow-trough re­ac­tion cell made of PEEK (po­ly­ethe­re­ther­ke­to­ne). Tem­pe­ra­tu­re can be ad­jus­ted up to a le­vel of 200°C, whi­le a flu­id re­ac­tant can be forced through the so­lid re­ac­tant wi­t­hin the cell at pres­su­res up to 10 MPa. Whi­le flu­id sam­ples can be drawn at any time, in ad­di­ti­on, re­ac­tion pro­gress can be mo­ni­to­red through re­pea­ted mi­cro­to­mo­gra­phic scans (µ-CT). Three flow-through set­ups are avail­able in the Hydro­ther­mal Lab (Hy­Lab) of the Pe­tro­lo­gy of the Oce­an Crust re­se­arch group.   

  • Kahl, W.-A., Hansen, C., and Bach, W. (2016) A new X-ray-transparent flow-through reaction cell for a μ-CT-based concomitant surveillance of the reaction progress of hydrothermal mineral–fluid interactions. Solid Earth, 7, 651-658.
    doi:10.5194/se-7-651-2016 |
Röntgentransparente Durchflussreaktionszelle aus PEEK in einem Ofen