1) don't have space between column and app pool'
s name
2) Quote the name of the application pool
%windir%\system32\inetsrv\appcmd start apppool /apppool.name:"SharePoint - 80"
Here are links that are related to this topic
Start or Stop an Application Pool (IIS 7)
iis7 - How do you start/stop IIS 7 app pool from cmd line if there are spaces in the app pool name? - Server Fault