Are there specific names for airport vehicles used for de-icing?
As far as I can tell they don't have their own name specifically they are part of the airports Ground Support Equipment. They have non-powered and powered support equipment, De/anti-icing vehicles fall under the powered category. Trying to find a better link than the one I found on Wikipedia In case you want to see that link
In case you want to buy one Heres a manufacturers website of GSE