Can an Adaptive algo order be direct routed to an exchange?

The default Destination for a stock order in Client Portal is SMART and cannot be changed in the Order Ticket. 

However, you can change the Destination/routing preference using iBot Commands:…

IBKR clients can add liquidity and interact with our retail order flow by direct-routing their US equity and index options orders to the IBUSOPT destination. Orders routed to IBUSOPT will be held at this liquidity-providing destination, and will be eligible to participate in an exchange auction to potentially fill against other SMART-routed marketable orders from IBKR clients…

IBKR Lite clients will not be able to select SMART routing for orders in US stocks outside of the Overnight; such orders will be routed through Lite where possible.

For all other orders entered by an IBKR Lite client SMART will need to be selected when available since direct routing of an order is not supported…

No, you cannot direct route an order to a specific market maker…