Regeneration of catalytic fast pyrolysis catalyst

A method of converting biomass to hydrocarbon products, comprising:

• feeding biomass into a reactor;
• pyrolyzing the biomass in the reactor in the presence of a zeolite catalyst to produce hydrocarbon products, wherein the pyrolysis results in a coke-contaminated catalyst comprising at least 0.59% coke by mass;
• removing the coke-contaminated catalyst from the reactor;
• reacting the coke-contaminated catalyst with an oxidant to produce an oxidatively regenerated catalyst;
• washing 1% to 50% by mass of the oxidatively regenerated catalyst with a liquid, wherein the washing regenerates Brønsted acid sites and produces a washed oxidatively regenerated catalyst;
• separating the washed oxidatively regenerated catalyst from the liquid;
• treating the separated washed oxidatively regenerated catalyst with a solution that adds at least one metal to the separated washed oxidatively regenerated catalyst to produce a treated separated washed oxidatively regenerated catalyst, wherein the at least one added metal is selected from the group consisting of Ga, Zn, Co, Fe, Cr, Cu, V, Ni, Mn, Ag, Na, P, Sn, Zr, Nb, Y, Ti, Ce, La, and combinations thereof;
• and
• returning at least a portion of the treated separated washed oxidatively regenerated catalyst to the reactor.

A method of converting biomass to hydrocarbon products, comprising:

• performing 2 to 500 pyrolysis and oxidative regeneration cycles wherein, each pyrolysis and oxidative regeneration cycle comprises:
• (i) feeding biomass into a reactor;
• (ii) pyrolyzing the biomass in the reactor in the presence of a catalyst comprising Brønsted acid sites to produce hydrocarbon products, wherein the pyrolysis results in a coke-contaminated catalyst;
• (iii) oxidatively regenerating the coke-contaminated catalyst by reacting the coke contaminated catalyst with an oxidant to produce an oxidatively-regenerated catalyst;
• and
• (iv) returning the oxidatively-regenerated catalyst to the reactor;
• washing 1% to 50% by mass of the oxidatively-regenerated catalyst with a liquid after performing said 2 to 500 pyrolysis and oxidative regeneration cycles, wherein the washing regenerates Brønsted acid sites;
• separating the washed oxidatively-regenerated catalyst from the liquid;
• and
• returning at least a portion of the separated washed oxidatively-regenerated catalyst to the reactor.

A method of converting biomass to hydrocarbon products, comprising:

• feeding biomass into a reactor;
• pyrolyzing the biomass in the reactor in the presence of a zeolite catalyst to produce hydrocarbon products, wherein the zeolite catalyst comprises Brønsted acid sites and wherein the pyrolysis results in a coke-contaminated catalyst;
• removing the coke-contaminated catalyst from the reactor;
• reacting the coke-contaminated catalyst with an oxidant to produce an oxidatively regenerated catalyst;
• washing 1% to 50% by mass of the oxidatively regenerated catalyst with a liquid to produce a washed oxidatively regenerated catalyst;
• separating the washed oxidatively regenerated catalyst from the liquid;
• calcining the washed oxidatively regenerated catalyst to produce a calcined washed oxidatively regenerated catalyst;
• and
• returning at least a portion of the calcined washed oxidatively regenerated catalyst to the reactor;
• wherein the number of Brønsted acid sites in the calcined washed oxidatively regenerated catalyst is at least 120% of the number of acid sites present in the zeolite catalyst prior to said pyrolyzing.