Systems and processes for catalytic conversion of C
Processes for converting one or more C 1 -C 5 linear or branched alcohols to one or more C 2 -C 5 olefins are provided. In one exemplary embodiment, the process can be a single stage process for the direct conversion of C 1 -C 5 alcohols to olefinic mixtures (e.g., C 2 -C 5 ) carried out in a reactor using a catalyst that includes zeolite doped with boron and phosphor. Systems for carrying out these processes are also provided.
1. A process for converting one or more C 1 -C 5 linear or branched alcohols to one or more C 2 -C 5 olefins, the process comprising:
contacting an input stream comprising the one or more C 1 -C 5 linear or branched alcohols with a catalyst in a reactor to form an output stream with greater than about 75 wt % carbon yield, the output stream comprising the one or more C 2 -C 5 olefins, the catalyst consisting essentially of zeolite doped with boron and phosphor;
wherein the reactor is at a temperature from about 300° C. to about 600° C., a gauge pressure from 0 to about 30 bar, and a weight hourly space velocity (WHSV) from about 0.25 to about 10; and
wherein boron is present in the catalyst in an amount from about 0.05 wt. % to about 5 wt. %, and wherein phosphor is present in the catalyst in an amount from about 0.2 wt. % to about 7 wt. %.
2. The process of claim 1 , wherein the reactor is a single bed reactor.
3. The process of claim 2 , wherein the single bed reactor is a fixed bed reactor.
4. The process of claim 2 , wherein the single bed reactor is a fluidized bed reactor.
5. The process of claim 2 , wherein the single bed reactor is a moving bed reactor.
6. The process of claim 1 , wherein the one or more C 2 -C 5 olefins are present in the output stream in an amount that is from about 85 wt. % to about 99 wt. % of the total hydrocarbon products in the output stream.
7. The process of claim 1 , wherein the zeolite is a ZSM-5 zeolite.
8. A process for converting one or more C 1 -C 5 linear or branched alcohols to one or more C 2 -C 5 olefins, the process comprising:
contacting an input stream comprising the one or more C 1 -C 5 linear or branched alcohols with a single catalyst in a reactor to form an output stream with greater than about 75 wt % carbon yield, the output stream comprising the one or more C 2 -C 5 olefins, the single catalyst comprising zeolite doped with boron and phosphor;
wherein the reactor is at a temperature from about 350° C. to about 750° C., a gauge pressure from 0 to about 30 bar, and a weight hourly space velocity (WHSV) from about 0.25 to about 5; and
wherein boron is present in the catalyst in an amount from about 0.05 wt. % to about 5 wt. %, and wherein phosphor is present in the catalyst in an amount from about 0.2 wt. % to about 7 wt. %.
9. The process of claim 8 , wherein the single catalyst consists essentially of zeolite doped with boron and phosphor.
10. The process of claim 8 , wherein the reactor is a single bed reactor.
11. The process of claim 10 , wherein the single bed reactor is a fixed bed reactor.
12. The process of claim 10 , wherein the single bed reactor is a fluidized bed reactor.
13. The process of claim 10 , wherein the single bed reactor is a fluidized bed reactor.
14. The process of claim 8 , wherein the one or more C 2 -C 5 olefins are present in the output stream in an amount that is from about 85 wt. % to about 99 wt. % of the total hydrocarbon products in the output stream.
15. The process of claim 8 , wherein the zeolite is a ZSM-5 zeolite.
16. A process for converting one or more C 1 -C 5 linear or branched alcohols to one or more C 2 -C 5 olefins, the process comprising:
contacting an input stream comprising the one or more C 1 -C 5 linear or branched alcohols with a catalyst in a reactor to form an output stream with greater than 85 wt % carbon yield, the output stream comprising the one or more C 2 -C 5 olefins, the catalyst consisting essentially of a ZSM-5 zeolite doped with boron and phosphor;
wherein the reactor is at a temperature from about 350° C. to about 475° C., a gauge pressure from 0 to about 5 bar, and a weight hourly space velocity (WHSV) from about 0.25 to about 10;
wherein boron is present in the catalyst in an amount from about 0.05 wt. % to about 3 wt. %, and wherein phosphor is present in the catalyst in an amount from about 0.2 wt. % to about 7 wt. %.