As per I know, SCR, alternatives to V-W-Ti is possible which are under progress as follows

Catal. Sci. Technol., (2) 2012, 915-917

Nanoscale, (5) 2013, 9199-9207

Catal. Sci. Technol., (3) 2013, 161

Chem.Commun., (49), 2013, 7726.

Journal of Colloid and Interface Science (402) 2013, 190

Catalysis Communications (37) 2013, 96

@K. Mahendraprabhu கா. மகேந்திரபிரபு. Thanks very much for your comments. I just want to know the possible industrial catalysts not just in papers. 

@ Wenxiang Tang, Thank you. I mentioned few articles of recent developments in SCR materials still optimizations are going on...If you go through these articles, definitely you can be explored ...I am also not expert in this filed but i studied few aspects on SCR and took seminar in 2013 in our research centre, My area of interest is automobile exhaust monitoring by developing affordable and high temperature zirconia-based gas sensors..

@K. Mahendraprabhu கா. மகேந்திரபிரபு. Thanks very much. I am very interested in your area, such as high temp. NOx sensors or CO sensors or VOCs sensors. More discussion can be done in the future.

@ Wenxiang Tang,  Thank you for your reply.. We can discuss more surely...