Mond gas is a cheap coal gas that was used for industrial heating purposes, the gas was named after its founder, a German-born chemist and industrialist who took British nationality?
Ludwig Mond
Title: Dry distillation
Passage: Dry distillation is the heating of solid materials to produce gaseous products (which may condense into liquids or solids).  The method may not involve pyrolysis or thermolysis.  The products are condensed and collected.  This method usually requires higher temperatures than classical distillation.  The method has been used to obtain liquid fuels from coal and wood.  It can also be used to break down mineral salts such as sulfates through thermolysis, in this case producing sulfur dioxide/sulfur trioxide gas which can be dissolved in water to obtain sulfuric acid.  By this method sulfuric acid was first identified and artificially produced.  When substances of vegetable origin, e.g. coal, oil shale, peat or wood, are heated in the absence of air (dry distillation), they decompose into gas, liquid products and coke/charcoal.  The yield and chemical nature of the decomposition products depend on the nature of the raw material and the conditions under which the dry distillation is done.  Decomposition within a temperature range of 450 to about 600°C is called carbonization or low-temperature degassing.  At temperatures above 900°C, the process is called coking or high-temperature degassing.  If coal is gasified to make coal gas or carbonized to make coke then Coal tar is among the by-products.
Title: Ludwig Mond
Passage: Ludwig Mond (7 March 1839 – 11 December 1909) was a German-born chemist and industrialist who took British nationality.  He discovered an important, previously-unknown class of compounds called metal carbonyls.
Title: Mond gas
Passage: Mond gas is a cheap coal gas that was used for industrial heating purposes.  Coal gases are made by decomposing coal through heating it to a high temperature.  Coal gases were the primary source of gas fuel during the 1940s and 1950s until the adoption of natural gas.  They were used for lighting, heating, and cooking, typically being supplied to households through pipe distribution systems.  The gas was named after its founder, Ludwig Mond.
Ludwig Mond Mond gas