Filters including segmented monolithic sorbent for gas-phase filtration

A cigarette comprising:

• a filter including:
• adjacent first and second monolithic sorbent segments, the first and second monolithic sorbent segments each comprising at least one porous sorbent material;
• at least a first mixing region defined between the first and second monolithic sorbent segments;
• and tobacco attached to the filter.

A cigarette filter, comprising:

• a first monolithic sorbent segment including a first inlet face, a first outlet face and a plurality of first flow channels extending from the first inlet face to the first outlet face, the first monolithic sorbent segment comprising at least one porous sorbent material;
• a second monolithic sorbent segment including a second inlet face, a second outlet face and a plurality of second flow channels extending from the second inlet face to the second outlet face, the second monolithic sorbent segment comprising at least one porous sorbent material;
• and
• a first mixing region defined between the first monolithic sorbent segment and the second monolithic sorbent segment.

A cigarette, comprising:

• a cigarette filter including:
• a first monolithic sorbent segment including a first inlet face, a first outlet face and a plurality of first flow channels extending from the first inlet face to the first outlet face, the first monolithic sorbent segment comprising at least one porous sorbent material;
• a second monolithic sorbent segment including a second inlet face, a second outlet face and a plurality of second flow channels extending from the second inlet face to the second outlet face, the second monolithic sorbent segment comprising at least one porous sorbent material;
• and a mixing region defined between the first monolithic sorbent segment and the second monolithic sorbent segment;
• and
• tobacco attached to the cigarette filter.