
have you considered taking on a rescued greyhound - many of them are already very used to kennel life and as a breed they are generally very laid back and snooze all day till you get home !. Many of the sight hound breeds can be quite lazy and will settle more easily to being on their own than other breeds. These include Borzois, Deerhounds,Saluki's etc however they do require a lot of input when young and are very inclined to 'do a runner' when off the lead.
Personally I would steer clear of breeds that are highly responsive such as most of those in the working or pastoral groups ( Collies,shepherds,etc) they are very attached to their owners and will suffer more than most breeds from anxiety separation aprticularly if only one is kept.
Many of the Spitz types will bark for hours if left (or even when you're there) :-) these include Husky's, Samoyeds, Keeshunds, large and small german spitz, buhunds etc.
Gundogs can be quieter and easier to leave once the mad youngster phase is done but again I would avoid the more 'active' types such as the setters, springers,Weimeraners and Visla's.
Large 'mastiff' breeds are often placid and quiet remaining happy to flop down and snooze for most of the day whilst you are at work - these include Newfoundlands, Saint Bernards, English Mastiffs, Leonbergers, Pyrenean mountain Dogs etc.
Toy breeds are very 'needy' of their owners attention and in my opinion should not be left all day.
Having said all this, all breeds will need lots of attention during the youngster stage and if your heart is set on a particular breed you can make it work - it just needs you to think about things from the dogs point of view and oads of patience ! ( I work all day and have 6 Belgian Shepherd Dogs !).