A 1-butene production process comprising: introducing a C 4 containing stream into a paraffin removal process to form an olefin rich stream, wherein the paraffin removal process is selected from: (a) extractive distillation utilizing a solvent comprising an organonitrile; (b) passing the C 4 containing stream over a semi-permeable membrane; and (c) combinations thereof; and isomerizing at least a portion of the 2-butene present in the olefin rich stream to 1-butene to form an isomerization product stream comprising at least 80 wt.% 1-butene wherein the C 4 containing stream comprises isobutylene, 1-butene, 2-butene, n-butane and isobutane; wherein the C 4 containing stream comprises from 40 wt.% to 70 wt.% olefins and from 30 wt.% to 85 wt.% paraffins; wherein the paraffin removal process is selected from: extractive distillation wherein the solvent comprises acetonitrile and the solvent is characterized by a relative volatility of C 4 over solvent of at least 1.70 and the solvent is diluted with water prior to extractive distillation with an amount of water sufficient to provide a solvent mixture comprising from 1 wt.% to 15 wt.% water; and passing the C 4 containing stream over a semi-permeable membrane comprising 30-60% metal selected from silver, copper and combinations thereof and a polysaccharide membrane chelated with the metal. introducing a C 4 containing stream into a paraffin removal process to form an olefin rich stream, wherein the paraffin removal process is selected from: (a) extractive distillation utilizing a solvent comprising an organonitrile; (b) passing the C 4 containing stream over a semi-permeable membrane; and (c) combinations thereof; and (a) extractive distillation utilizing a solvent comprising an organonitrile; (b) passing the C 4 containing stream over a semi-permeable membrane; and (c) combinations thereof; and isomerizing at least a portion of the 2-butene present in the olefin rich stream to 1-butene to form an isomerization product stream comprising at least 80 wt.% 1-butene wherein the C 4 containing stream comprises isobutylene, 1-butene, 2-butene, n-butane and isobutane; wherein the C 4 containing stream comprises from 40 wt.% to 70 wt.% olefins and from 30 wt.% to 85 wt.% paraffins; wherein the paraffin removal process is selected from: extractive distillation wherein the solvent comprises acetonitrile and the solvent is characterized by a relative volatility of C 4 over solvent of at least 1.70 and the solvent is diluted with water prior to extractive distillation with an amount of water sufficient to provide a solvent mixture comprising from 1 wt.% to 15 wt.% water; and passing the C 4 containing stream over a semi-permeable membrane comprising 30-60% metal selected from silver, copper and combinations thereof and a polysaccharide membrane chelated with the metal. extractive distillation wherein the solvent comprises acetonitrile and the solvent is characterized by a relative volatility of C 4 over solvent of at least 1.70 and the solvent is diluted with water prior to extractive distillation with an amount of water sufficient to provide a solvent mixture comprising from 1 wt.% to 15 wt.% water; and passing the C 4 containing stream over a semi-permeable membrane comprising 30-60% metal selected from silver, copper and combinations thereof and a polysaccharide membrane chelated with the metal. <EOS>