UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2 FUEL-TECH N.V. (Name of Issuer) COMMON STOCK, PAR VALUE $0.01 PER SHARE (Title of Class of Securities) 359523 10 7 (CUSIP Number) April 24, 2006 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [X] Rule 13d-1(c) [ ] Rule 13d-1(d) CUSIP No. 359523 10 7 13G Page 2 of 5 ---------------------------------------------------------------------------------------------------------------------- 1. NAMES OF REPORTING PERSONS IRS IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) RIT Capital Partners plc ---------------------------------------------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] Not applicable ---------------------------------------------------------------------------------------------------------------------- 3. SEC USE ONLY ---------------------------------------------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION England ---------------------------------------------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER 874,772 SHARES BENEFICIALLY -------------------------------------------------------------------------------------------- OWNED BY 6. SHARED VOTING POWER 0 EACH REPORTING -------------------------------------------------------------------------------------------- PERSON WITH 7. SOLE DISPOSITIVE POWER 874,772 -------------------------------------------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 ----------------------------------------------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 874,772 ---------------------------------------------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] ---------------------------------------------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 4.1% ---------------------------------------------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) CO ---------------------------------------------------------------------------------------------------------------------- 2 CUSIP No. 359523 10 7 13G Page 3 of 5 ITEM 1(A). NAME OF ISSUER: Fuel-Tech N.V. ITEM 1(B). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: Castorweg 22-24 Curacao, Netherlands Antilles ITEM 2(A). NAME OF PERSON FILING: RIT Capital Partners plc ITEM 2(B). ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE: 27 St. James's Place London SW1A 1NR England ITEM 2(C). CITIZENSHIP: England ITEM 2(D). TITLE OF CLASS OF SECURITIES: Common Stock, $0.01 par value per share ITEM 2(E). CUSIP NUMBER: 359523 10 7 ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULE 13D-1(B), OR 13D-2(B) OR (C), CHECK WHETHER THE PERSON FILING IS A: Not applicable 3 CUSIP No. 359523 10 7 13G Page 4 of 5 ITEM 4. OWNERSHIP. Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1: (a) Amount beneficially owned: 874,772 shares (b) Percent of class: 4.1% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 874,772 (ii) Shared power to vote or to direct the vote: 0 (iii) Sole power to dispose or to direct the disposition of: 874,772 (iv) Shared power to dispose or to direct the disposition of: 0 ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [ X ]. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON. Not applicable. ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON. J. Rothschild Capital Management Limited, a wholly-owned subsidiary of RIT Capital Partners plc ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP. Not applicable. ITEM 9. NOTICE OF DISSOLUTION OF GROUP. Not applicable. ITEM 10. CERTIFICATIONS. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. 4 CUSIP No. 359523 10 7 13G Page 5 of 5 SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: May 2, 2006 RIT Capital Partners plc By: /s/ C.J. Wise -------------------------------- Name: C.J. Wise Title: Alternate Director 5